| Tuesday, December 17th, 1957 | | Peterborough Locks: C Sam Duffy was injured while lawn bowling at a family reunion. The Diagnosis: sore shoulder. He's expected to miss about 4 weeks. |
| Tuesday, October 15th, 1957 | | Hamilton Steelers: RF Ernesto Reyes was injured while falling off the stage at an Awards Ceremony. The Diagnosis: sprained thumb. He's expected to miss about 6 weeks. |
| Saturday, August 31st, 1957 | | Welland Bridges: CF Hollis Scott was injured on a defensive play. The Diagnosis: sprained thumb. He's expected to miss about one week. |
| Sunday, August 25th, 1957 | | Keswick Ice Fishers: SS Alfredo Gómez was injured in a collision at a base. The Diagnosis: strained hamstring. He's expected to miss about 3-4 weeks. |
| Saturday, August 24th, 1957 | | Guelph Royals: 1B Will Smith was injured while running the bases. The Diagnosis: hamstring strain. He's expected to miss about 3-4 weeks. | | Brampton Roses: SP Hidetoshi Watanabe was injured while pitching. The Diagnosis: torn triceps. He's expected to miss about 4 months. |
| Friday, August 23rd, 1957 | | Thornhill Blue Sox: RF Ken Reece was injured while running the bases. The Diagnosis: strained rib cage muscle. He's expected to miss about 3-4 weeks. | | Vaughan Millers: 1B Javier Diéguez was injured while running the bases. The Diagnosis: hamstring strain. He's expected to miss about 6 weeks. |
| Thursday, August 22nd, 1957 | | Port Credit Traders: 1B Will Daniels was injured while running the bases. The Diagnosis: strained rib cage muscle. He's expected to miss about 2-3 weeks. | | Hamilton Steelers: C Tom Dimaggio was injured in a collision at home plate. The Diagnosis: shoulder tendinitis. He's expected to miss about 1-2 weeks. | | Brampton Roses: C Manuel Ayala was injured while running the bases. The Diagnosis: sore hamstring. This is a day-to-day injury expected to last 2 days. |
| Wednesday, August 21st, 1957 | | Kitchener Marshalls: Jorge García has suffered a setback in his recovery. He is not expected to recover for another 5 days. | | Port Credit Traders: SP Casey Wade was injured while running the bases. The Diagnosis: knee tendinitis. This is a day-to-day injury expected to last 3 days. |
| Friday, August 16th, 1957 | | Peterborough Locks: SP Zi-xing Ku was injured while pitching. The Diagnosis: sprained ankle. This is a day-to-day injury expected to last 6 days. |
| Tuesday, August 13th, 1957 | | Thornhill Blue Sox: SS Gordon Elmore was injured while running the bases. The Diagnosis: bruised thigh. This is a day-to-day injury expected to last one week. | | Ajax Cruisers: RF Jeff Parrish was injured on a defensive play. The Diagnosis: sprained elbow. He's expected to miss about 2-3 weeks. |
| Sunday, August 11th, 1957 | | Ajax Cruisers: Dennis White has suffered a setback in his recovery. He is not expected to recover for another 5 days. | | Brantford Bells: RF Cisco Moreno is ill. The Diagnosis: stomach virus. He's expected to miss about 3 days. | | Vaughan Millers: RF Tzu-hsia Ji was injured on a defensive play. The Diagnosis: back soreness. He's expected to miss about 4 days. | | Hamilton Steelers: 2B Chris Small was injured in a collision at a base. The Diagnosis: herniated disc (back). He's expected to miss about 2 weeks. | | Hamilton Steelers: 3B Curtis Horgan was injured being hit by a pitch. The Diagnosis: bruised cheekbone. This is a day-to-day injury expected to last 1 day. |
| Saturday, August 10th, 1957 | | Guelph Royals: LF Xu Gong was injured while throwing the ball. The Diagnosis: back tightness. This is a day-to-day injury expected to last 4 days. |
| Friday, August 9th, 1957 | | Thornhill Blue Sox: RF Ken Reece was injured while throwing the ball. The Diagnosis: mild oblique strain. This is a day-to-day injury expected to last 1 day. |
| Wednesday, August 7th, 1957 | | Welland Bridges: CF Hollis Scott was injured on a defensive play. The Diagnosis: separated shoulder. He's expected to miss about 3 weeks. | | Brampton Roses: RF Bruno Cobb was injured while running the bases. The Diagnosis: strained rib cage muscle. He's expected to miss about 2 weeks. |
| Sunday, August 4th, 1957 | | Brantford Bells: RF Javier Vázquez was injured on a defensive play. The Diagnosis: oblique strain. He's expected to miss about 2 weeks. |
| Saturday, August 3rd, 1957 | | Vaughan Millers: 3B Vincente Méndez was injured while running the bases. The Diagnosis: sore ankle. This is a day-to-day injury expected to last one week. | | Thornhill Blue Sox: SP Sterling Moore was injured while pitching. The Diagnosis: wrist soreness. This is a day-to-day injury expected to last 3 days. |
| Friday, August 2nd, 1957 | | Thornhill Blue Sox: Ken Reece has suffered a setback in his recovery. He is not expected to recover for another 6 days. | | Ajax Cruisers: RF Jeff Parrish was injured in a collision at a base. The Diagnosis: back stiffness. This is a day-to-day injury expected to last 2 weeks. |
| Thursday, August 1st, 1957 | | Port Credit Traders: 2B Leo Nash was injured in a collision at a base. The Diagnosis: oblique strain. He's expected to miss about 2 weeks. |
| Wednesday, July 31st, 1957 | | Kitchener Marshalls: CF Roberto Leyva was injured on a defensive play. The Diagnosis: sprained wrist. He's expected to miss about 4 weeks. | | Brampton Roses: MR Jason Ayers was injured while pitching. The Diagnosis: sore ankle. This is a day-to-day injury expected to last 2 days. |
| Monday, July 29th, 1957 | | Vaughan Millers: SS Timoteo Tegliacci was injured while running the bases. The Diagnosis: ankle soreness. He's expected to miss about 6 days. |
| Sunday, July 28th, 1957 | | Vaughan Millers: CF Kelly Harris was injured on a defensive play. The Diagnosis: wrist tendinitis. He's expected to miss about 2-3 weeks. | | Brampton Roses: RF Bruno Cobb was injured while running the bases. The Diagnosis: mild hip strain. This is a day-to-day injury expected to last 2 weeks. | | St. Catherines Wildcats: LF Kurt Harrington was injured on a defensive play. The Diagnosis: mild shoulder strain. He's expected to miss about one week. |
| Friday, July 26th, 1957 | | Hamilton Steelers: SP Phil Lewis was injured while pitching. The Diagnosis: tired arm. He's expected to miss about 5 days. |
| Thursday, July 25th, 1957 | | Uxbridge Celts: SS Will O'Day is ill. The Diagnosis: food poisoning. He's expected to miss about 3 days. | | Pickering Lakers: RF Jo-hsi Yen was injured on a defensive play. The Diagnosis: hand soreness. This is a day-to-day injury expected to last 4 days. |
| Wednesday, July 24th, 1957 | | Thornhill Blue Sox: SP Lou Little was injured while pitching. The Diagnosis: back soreness. He's expected to miss about 2 weeks. | | Brantford Bells: 2B Lorenzo Mendoza was injured while running the bases. The Diagnosis: back stiffness. He's expected to miss about one week. |
| Sunday, July 21st, 1957 | | Kitchener Marshalls: LF Jorge García was injured in a collision at a base. The Diagnosis: fractured shoulder blade. He's expected to miss about 4-5 weeks. |
| Saturday, July 20th, 1957 | | Keswick Ice Fishers: SS Alfredo Gómez was injured while running the bases. The Diagnosis: intercostal strain. He's expected to miss about one week. | | Port Credit Traders: MR Ray Brennan was injured while pitching. The Diagnosis: torn UCL (Tommy John surgery). He's expected to miss about 12-13 months. | | St. Catherines Wildcats: C Ron Burns was injured being hit by a pitch. The Diagnosis: bruised elbow. This is a day-to-day injury expected to last 5 days. |
| Friday, July 19th, 1957 | | Brampton Roses: 1B Yoshii Nakamura was injured in a collision at a base. The Diagnosis: torn thumb ligament. He's expected to miss about 5 weeks. |
| Wednesday, July 17th, 1957 | | Port Credit Traders: SS Fred Eisenhauer was injured while throwing the ball. The Diagnosis: shoulder soreness. This is a day-to-day injury expected to last 5 days. |
| Tuesday, July 16th, 1957 | | Keswick Ice Fishers: LF Butch Martin was injured on a defensive play. The Diagnosis: back tightness. He's expected to miss about 2 weeks. | | Brampton Roses: CF Gary Sampson was injured on a defensive play. The Diagnosis: post-concussion syndrome. He's expected to miss about 3-4 months. |
| Sunday, July 14th, 1957 | | Vaughan Millers: 3B Vincente Méndez was injured while running the bases. The Diagnosis: strained back. He's expected to miss about 2 weeks. |
| Sunday, July 7th, 1957 | | Oshawa Carriages: SP Raúl Rodríguez was injured while pitching. The Diagnosis: back tightness. This is a day-to-day injury expected to last 3 days. | | Keswick Ice Fishers: SS Alfredo Gómez was injured while running the bases. The Diagnosis: mild groin strain. This is a day-to-day injury expected to last one week. |
| Friday, July 5th, 1957 | | Vaughan Millers: LF Kelly Harris was injured while throwing the ball. The Diagnosis: tender shoulder. This is a day-to-day injury expected to last 6 days. | | Guelph Royals: CF Jesús Zúñiga was injured on a defensive play. The Diagnosis: recurring back spasms. He's expected to miss about 5 weeks. |
| Thursday, July 4th, 1957 | | Oshawa Carriages: SS Floyd Brooks was injured in a collision at a base. The Diagnosis: shoulder soreness. He's expected to miss about 3 weeks. |
| Wednesday, July 3rd, 1957 | | Uxbridge Celts: MR Dusty Akers was injured while pitching. The Diagnosis: tired arm. He's expected to miss about 6 days. | | Peterborough Locks: 3B Dae-ik Chang was injured on a defensive play. The Diagnosis: fractured ankle. He's expected to miss about 4-5 months. | | Ajax Cruisers: CF Cal Nelson was injured while throwing the ball. The Diagnosis: oblique strain. He's expected to miss about 5 weeks. |
| Monday, July 1st, 1957 | | Uxbridge Celts: 1B Steve Rogers was injured while throwing the ball. The Diagnosis: back spasms. This is a day-to-day injury expected to last 2 days. | | Vaughan Millers: RF Takahiro Nemoto was injured on a defensive play. The Diagnosis: wrist soreness. This is a day-to-day injury expected to last 2 weeks. | | Ajax Cruisers: 3B Roberto Mercado was injured while running the bases. The Diagnosis: knee contusion. He's expected to miss about 2 weeks. |
| Saturday, June 29th, 1957 | | Pickering Lakers: SP Bob Ervin was injured while pitching. The Diagnosis: forearm stiffness. He's expected to miss about one week. |
| Friday, June 28th, 1957 | | Oshawa Carriages: 2B Arturo Carbajal was injured on a defensive play. The Diagnosis: strained oblique. He's expected to miss about 3 weeks. | | Thornhill Blue Sox: RF Ken Reece was injured while running the bases. The Diagnosis: strained oblique. He's expected to miss about 5-6 weeks. | | Brantford Bells: LF Mike Mathews was injured on a defensive play. The Diagnosis: hamstring strain. He's expected to miss about 6-7 weeks. |
| Wednesday, June 26th, 1957 | | Pickering Lakers: 3B Lorenzo García was injured while running the bases. The Diagnosis: blurred vision. This is a day-to-day injury expected to last 1 day. | | Kitchener Marshalls: 3B Steve Morrow was injured while throwing the ball. The Diagnosis: back spasms. This is a day-to-day injury expected to last 5 days. | | Hamilton Steelers: SP Aubrey Decker was injured while pitching. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last 4 days. |
| Tuesday, June 25th, 1957 | | Peterborough Locks: CF Jorge Moreno was injured while throwing the ball. The Diagnosis: neck stiffness. This is a day-to-day injury expected to last one week. |
| Saturday, June 22nd, 1957 | | Oshawa Carriages: LF Jud Hopkins was injured while running the bases. The Diagnosis: quadriceps strain. He's expected to miss about 2 weeks. | | Thornhill Blue Sox: CF Wilson Bojórquez was injured being hit by a pitch. The Diagnosis: bruised knee. This is a day-to-day injury expected to last 1 day. |
| Friday, June 21st, 1957 | | Brampton Roses: Gary Sampson has suffered a setback in his recovery. He is not expected to recover for another 5 days. | | Brampton Roses: 1B Yoshii Nakamura was injured while running the bases. The Diagnosis: groin soreness. This is a day-to-day injury expected to last 6 days. |
| Wednesday, June 19th, 1957 | | Thornhill Blue Sox: SP Juan López was injured while pitching. The Diagnosis: torn UCL (Tommy John surgery). He's expected to miss about 12 months. | | Peterborough Locks: SP Matt Wilson was injured while pitching. The Diagnosis: strained back. This is a day-to-day injury expected to last 5 days. | | Peterborough Locks: MR John Wilson was injured while pitching. The Diagnosis: mild hamstring strain. He's expected to miss about 2 weeks. | | Brantford Bells: LF Chris Thompson was injured while running the bases. The Diagnosis: strained groin. He's expected to miss about 5 weeks. |
| Tuesday, June 18th, 1957 | | Peterborough Locks: CF Jorge Moreno was injured on a defensive play. The Diagnosis: back stiffness. This is a day-to-day injury expected to last 5 days. |
| Monday, June 17th, 1957 | | Oshawa Carriages: Víctor Martínez has suffered a setback in his recovery. He is not expected to recover for another one week. | | Kitchener Marshalls: 2B Ramón Padilla was injured while running the bases. The Diagnosis: back stiffness. This is a day-to-day injury expected to last 5 days. | | Guelph Royals: 3B Jesús Rúbio was injured in a collision at a base. The Diagnosis: torn labrum (Shoulder). He's expected to miss about 8-9 months. |
| Sunday, June 16th, 1957 | | Uxbridge Celts: Robert Lawrence has suffered a setback in his recovery. He is not expected to recover for another 6 days. | | Port Credit Traders: 3B Rafael Chávez was injured on a defensive play. The Diagnosis: sore elbow. This is a day-to-day injury expected to last 2 weeks. | | Brampton Roses: CF Gary Sampson was injured while running the bases. The Diagnosis: quadriceps strain. He's expected to miss about one week. |
| Saturday, June 15th, 1957 | | Oshawa Carriages: SP Darren Jackson was injured while pitching. The Diagnosis: mild shoulder inflammation. He's expected to miss about 6 days. | | Keswick Ice Fishers: 3B Emílio Valdés was injured in a collision at a base. The Diagnosis: sprained knee. He's expected to miss about 5-6 weeks. |
| Friday, June 14th, 1957 | | Brantford Bells: 3B Felipe Blanco was injured while running the bases. The Diagnosis: latissimus dorsi strain. He's expected to miss about one week. |
| Thursday, June 13th, 1957 | | Peterborough Locks: 3B Dae-ik Chang was injured being hit by a pitch. The Diagnosis: bruised finger. This is a day-to-day injury expected to last 5 days. |
| Wednesday, June 12th, 1957 | | Guelph Royals: SS Jorge Gonzáles was injured while running the bases. The Diagnosis: sore groin. This is a day-to-day injury expected to last 2 days. |
| Tuesday, June 11th, 1957 | | Brampton Roses: MR Kyle MacIntosh was injured while getting beaned by a pitching machine. The Diagnosis: mild hamstring strain. He's expected to miss about 1-2 weeks. | | Uxbridge Celts: 2B Rod Small was injured in a collision at a base. The Diagnosis: herniated disc (back). He's expected to miss about 4 weeks. | | Guelph Royals: RF Manuel Córdova was injured on a defensive play. The Diagnosis: sore hamstring. This is a day-to-day injury expected to last 3 days. | | Port Credit Traders: SS Pedro Fontanez was injured while running the bases. The Diagnosis: strained rib cage muscle. He's expected to miss about 1-2 weeks. | | Brampton Roses: 2B Alfredo Martínez was injured while running the bases. The Diagnosis: patellar tendinitis. He's expected to miss about 2 weeks. | | Brampton Roses: SP Bob Patterson was injured while pitching. The Diagnosis: shoulder inflammation. He's expected to miss about 3-4 months. | | Welland Bridges: SP Pablo Vázquez was injured while pitching. The Diagnosis: back soreness. He's expected to miss about 3 days. |
| Sunday, June 9th, 1957 | | Pickering Lakers: SP John Hobbs was injured while pitching. The Diagnosis: recurring back spasms. He's expected to miss about 7-8 weeks. | | Kitchener Marshalls: SP Tony Aguilar was injured while pitching. The Diagnosis: sore ankle. This is a day-to-day injury expected to last 4 days. | | Kitchener Marshalls: MR Derrick Mash was injured while pitching. The Diagnosis: abdominal soreness. This is a day-to-day injury expected to last 2 days. | | Brantford Bells: RF Javier Vázquez was injured on a defensive play. The Diagnosis: oblique strain. He's expected to miss about 4 weeks. |
| Saturday, June 8th, 1957 | | Ajax Cruisers: CF Cal Nelson was injured on a defensive play. The Diagnosis: lacerated chin. This is a day-to-day injury expected to last 1 day. | | Ajax Cruisers: C Juan García was injured being hit by a pitch. The Diagnosis: bruised cheekbone. This is a day-to-day injury expected to last 1 day. | | Pickering Lakers: SP Raúl Trujillo was injured while pitching. The Diagnosis: elbow tendinitis. He's expected to miss about 2-3 months. |
| Thursday, June 6th, 1957 | | Brampton Roses: 2B Alfredo Martínez was injured while running the bases. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last 2 days. |
| Sunday, June 2nd, 1957 | | Kitchener Marshalls: 1B Chandler Caldwell was injured while running the bases. The Diagnosis: quadriceps soreness. This is a day-to-day injury expected to last 3 days. |
| Thursday, May 30th, 1957 | | Port Credit Traders: 3B Caleb McAdie was injured being hit by a pitch. The Diagnosis: bruised knee. This is a day-to-day injury expected to last 6 days. |
| Wednesday, May 29th, 1957 | | Ajax Cruisers: LF Carlos Alfmana was injured on a defensive play. The Diagnosis: jammed finger. This is a day-to-day injury expected to last 2 days. |
| Monday, May 27th, 1957 | | Ajax Cruisers: CF Cal Nelson was injured while throwing the ball. The Diagnosis: back stiffness. This is a day-to-day injury expected to last 4 days. | | Vaughan Millers: RF Tony Román was injured while running the bases. The Diagnosis: bruised ankle. This is a day-to-day injury expected to last 2 days. |
| Sunday, May 26th, 1957 | | Uxbridge Celts: 2B Robert Lawrence was injured in a collision at a base. The Diagnosis: intercostal strain. He's expected to miss about 4 weeks. |
| Saturday, May 25th, 1957 | | Ajax Cruisers: 3B Roberto Mercado was injured being hit by a pitch. The Diagnosis: bruised thigh. This is a day-to-day injury expected to last one week. | | Brantford Bells: RF Chris Thompson was injured on a defensive play. The Diagnosis: strained oblique. He's expected to miss about 3-4 weeks. | | Port Credit Traders: 2B Fred Eisenhauer was injured in a collision at a base. The Diagnosis: herniated disc (back). He's expected to miss about 2-3 weeks. |
| Friday, May 24th, 1957 | | Uxbridge Celts: MR Curro Guerrero was injured while pitching. The Diagnosis: torn labrum (Shoulder). He's expected to miss about 10 months. | | Peterborough Locks: RF Manny Guzmán was injured while throwing the ball. The Diagnosis: elbow tendinitis. He's expected to miss about 3 weeks. |
| Thursday, May 23rd, 1957 | | Welland Bridges: 1B Jacob Spencer was injured while running the bases. The Diagnosis: sprained knee. He's expected to miss about 6 weeks. |
| Wednesday, May 22nd, 1957 | | Guelph Royals: SS Jorge Gonzáles was injured while running the bases. The Diagnosis: back stiffness. This is a day-to-day injury expected to last 5 days. |
| Sunday, May 19th, 1957 | | St. Catherines Wildcats: RF António Díaz was injured being hit by a pitch. The Diagnosis: bruised wrist. This is a day-to-day injury expected to last 1 day. |
| Friday, May 17th, 1957 | | Port Credit Traders: RF David Seals was injured on a defensive play. The Diagnosis: strained hamstring. He's expected to miss about 4 weeks. |
| Thursday, May 16th, 1957 | | Kitchener Marshalls: 1B Mike Deatherage was injured in a collision at a base. The Diagnosis: sprained ankle. He's expected to miss about 2 months. | | Brantford Bells: CF Ángel Martínez was injured in a collision at a base. The Diagnosis: mild hamstring strain. This is a day-to-day injury expected to last 1 day. | | Brantford Bells: RF Carlos Rodríguez was injured in a collision at a base. The Diagnosis: mild oblique strain. This is a day-to-day injury expected to last 5 days. | | Welland Bridges: 3B Xu Sen was injured in a collision at a base. The Diagnosis: ruptured tendon (finger). He's expected to miss about 4 months. |
| Tuesday, May 14th, 1957 | | Pickering Lakers: CF David Garza was injured while running the bases. The Diagnosis: sprained ankle. He's expected to miss about 6 weeks. |
| Monday, May 13th, 1957 | | Uxbridge Celts: SP Ighlaf Chuguel was injured while pitching. The Diagnosis: torn meniscus (knee). He's expected to miss about 3 months. |
| Sunday, May 12th, 1957 | | Peterborough Locks: 2B Carlos Uribe was injured in a collision at a base. The Diagnosis: fractured rib. He's expected to miss about 3 weeks. | | Brampton Roses: SP José Durán was injured while pitching. The Diagnosis: oblique strain. He's expected to miss about 3 weeks. |
| Saturday, May 11th, 1957 | | Keswick Ice Fishers: 3B Emílio Valdés was injured while running the bases. The Diagnosis: oblique strain. He's expected to miss about 6 days. |
| Friday, May 10th, 1957 | | Uxbridge Celts: CF Bartolo López was injured while running the bases. The Diagnosis: knee soreness. He's expected to miss about 3 days. |
| Wednesday, May 8th, 1957 | | Vaughan Millers: LF Brian Bernard was injured when he was attacked by a shark. The Diagnosis: bruised elbow. This is a day-to-day injury expected to last 1-2 weeks. | | Keswick Ice Fishers: RF Adrián Roa was injured on a defensive play. The Diagnosis: sprained elbow. He's expected to miss about 3 weeks. | | Peterborough Locks: 3B Max El Hindi was injured being hit by a pitch. The Diagnosis: fractured foot. He's expected to miss about 4-5 weeks. | | Kitchener Marshalls: 2B Ramón Padilla was injured in a collision at a base. The Diagnosis: sprained thumb. He's expected to miss about 3 weeks. |
| Tuesday, May 7th, 1957 | | Thornhill Blue Sox: RF Ken Robinson was injured while throwing the ball. The Diagnosis: back tightness. This is a day-to-day injury expected to last 2 days. |
| Monday, May 6th, 1957 | | Brampton Roses: 2B Alfredo Martínez was injured while running the bases. The Diagnosis: back stiffness. This is a day-to-day injury expected to last 2 days. |
| Sunday, May 5th, 1957 | | Ajax Cruisers: SS Pedro Sáenz was injured while throwing the ball. The Diagnosis: mild shoulder strain. He's expected to miss about 4 days. | | Ajax Cruisers: RF Jeff Parrish was injured while running the bases. The Diagnosis: calf cramp. This is a day-to-day injury expected to last 2 days. | | Guelph Royals: SP T.J. Moore was injured while pitching. The Diagnosis: shoulder inflammation. He's expected to miss about 4-5 months. |
| Saturday, May 4th, 1957 | | Keswick Ice Fishers: 3B Chris Copping was injured in a collision at a base. The Diagnosis: strained back. He's expected to miss about 3 weeks. |
| Friday, May 3rd, 1957 | | Peterborough Locks: CF Ray Sours was injured on a defensive play. The Diagnosis: strained oblique. He's expected to miss about one week. | | Welland Bridges: MR Augusto López was injured while pitching. The Diagnosis: elbow soreness. He's expected to miss about 2-3 weeks. | | Brampton Roses: C Ramón Espinosa was injured while running the bases. The Diagnosis: fractured foot. He's expected to miss about 3 weeks. |
| Tuesday, April 30th, 1957 | | Vaughan Millers: 1B Ed Stanley was injured while running the bases. The Diagnosis: strained hamstring. He's expected to miss about 4 weeks. |
| Monday, April 29th, 1957 | | Brantford Bells: LF Mike Mathews was injured on a defensive play. The Diagnosis: bruised elbow. This is a day-to-day injury expected to last 1 day. |
| Sunday, April 28th, 1957 | | Vaughan Millers: LF Takahiro Nemoto was injured while running the bases. The Diagnosis: hamstring tightness. This is a day-to-day injury expected to last one week. |
| Saturday, April 27th, 1957 | | Port Credit Traders: SP Casey Wade was injured while pitching. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last 2 days. |
| Thursday, April 25th, 1957 | | Brantford Bells: CF Chris Thompson was injured while running the bases. The Diagnosis: concussion. He's expected to miss about 2 weeks. |
| Wednesday, April 24th, 1957 | | Peterborough Locks: 1B Júlio Díaz was injured in a collision at a base. The Diagnosis: intercostal strain. He's expected to miss about 3 weeks. | | Peterborough Locks: RF Norm Sanders was injured while running the bases. The Diagnosis: back spasms. This is a day-to-day injury expected to last 2 days. | | Brantford Bells: SP Clyde White was injured while throwing the ball. The Diagnosis: strained hamstring. He's expected to miss about 6 weeks. |
| Monday, April 22nd, 1957 | | Welland Bridges: 2B Chris Dudley was injured in a collision at a base. The Diagnosis: herniated disc (back). He's expected to miss about 3 weeks. |
| Sunday, April 21st, 1957 | | Ajax Cruisers: C Juan García was injured in a collision at a base. The Diagnosis: wrist soreness. This is a day-to-day injury expected to last 1-2 weeks. |
| Friday, April 19th, 1957 | | Thornhill Blue Sox: 2B Teuk-chin Ch'oe was injured being hit by a pitch. The Diagnosis: bruised toe. This is a day-to-day injury expected to last 2 days. |
| Wednesday, April 17th, 1957 | | Port Credit Traders: 2B Carlos López was injured while running the bases. The Diagnosis: ankle soreness. He's expected to miss about 4 days. |
| Monday, April 15th, 1957 | | Hamilton Steelers: SS Jonathan Johnson was injured in a collision at a base. The Diagnosis: sprained finger. He's expected to miss about 2 weeks. |
| Sunday, April 14th, 1957 | | Brantford Bells: 2B Felipe Blanco was injured in a collision at a base. The Diagnosis: lacerated hand. He's expected to miss about 2-3 weeks. | | Port Credit Traders: SP Jorge Domínguez was injured while pitching. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last 1 day. |
| Thursday, April 11th, 1957 | | Welland Bridges: SP Jessie Byer was injured while pitching. The Diagnosis: sprained ankle. This is a day-to-day injury expected to last one week. |
| Monday, April 8th, 1957 | | Thornhill Blue Sox: C Neal Lancaster was injured while running the bases. The Diagnosis: strained groin. He's expected to miss about 5-6 weeks. |
| Sunday, April 7th, 1957 | | Kitchener Marshalls: CF Dan Barnes was injured in a collision at a base. The Diagnosis: torn rib cage muscle. He's expected to miss about 3 months. |
| Saturday, April 6th, 1957 | | Ajax Cruisers: CF Roberto Núñez was injured on a defensive play. The Diagnosis: sprained ankle. This is a day-to-day injury expected to last 2 weeks. | | Welland Bridges: SP Jessie Byer was injured while pitching. The Diagnosis: finger blister. This is a day-to-day injury expected to last 2 days. |
| Friday, April 5th, 1957 | | Uxbridge Celts: SS Mario Mejía was injured being hit by a pitch. The Diagnosis: knee contusion. He's expected to miss about 4 days. | | Kitchener Marshalls: SS Bernardo Pérez was injured in a collision at a base. The Diagnosis: intercostal strain. He's expected to miss about 3-4 weeks. |
| Thursday, April 4th, 1957 | | Oshawa Carriages: 3B Arturo Carbajal was injured in a collision at a base. The Diagnosis: mild oblique strain. This is a day-to-day injury expected to last one week. |
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