| Wednesday, January 2nd, 1974 | | Kitchener Marshalls: Ben Bennett has suffered a setback in his recovery. He is not expected to recover for another 4 days. |
| Friday, December 21st, 1973 | | Kitchener Marshalls: CF Ben Bennett was injured while kicking his locker after an argument with his manager. The Diagnosis: ankle soreness. He's expected to miss about 2 weeks. |
| Sunday, October 28th, 1973 | | Keswick Ice Fishers: CL Pedro Delgado was injured when he fell down the stairs while sleepwalking. The Diagnosis: intercostal strain. He's expected to miss about one week. |
| Friday, August 24th, 1973 | | Kitchener Marshalls: 1B Kent Welch was injured while running the bases. The Diagnosis: groin soreness. This is a day-to-day injury expected to last 4 days. |
| Wednesday, August 22nd, 1973 | | Oshawa Carriages: 2B Sloan Leach is ill. The Diagnosis: flu. This is a day-to-day injury expected to last 2 days. | | Timmins Jolt: 3B Charlie Johnston was injured while running the bases. The Diagnosis: hamstring tendinitis. He's expected to miss about 3 weeks. | | Port Credit Traders: 2B Gary Wright was injured while running the bases. The Diagnosis: oblique strain. He's expected to miss about one week. |
| Tuesday, August 21st, 1973 | | Hamilton Steelers: 3B Gerald Morris was injured in a collision at a base. The Diagnosis: strained oblique. He's expected to miss about 2 weeks. |
| Sunday, August 19th, 1973 | | Port Credit Traders: MR Rintaro Harada was injured while pitching. The Diagnosis: torn rotator cuff. He's expected to miss about 13-14 months. |
| Saturday, August 18th, 1973 | | Pickering Lakers: Foster Jones has suffered a setback in his recovery. He is not expected to recover for another 6 days. |
| Thursday, August 16th, 1973 | | Vaughan Millers: RF Sergio Gutiérrez was injured on a defensive play. The Diagnosis: sore elbow. This is a day-to-day injury expected to last one week. | | Kitchener Marshalls: RF Ramón Morales was injured while throwing the ball. The Diagnosis: strained oblique. He's expected to miss about 2-3 weeks. |
| Wednesday, August 15th, 1973 | | Hamilton Steelers: Barry Wiltshire has suffered a setback in his recovery from injury. He has elected to retire rather than continue his rehabilitation. This is a CAREER ENDING injury! |
| Monday, August 13th, 1973 | | Thornhill Blue Sox: SS Arthur Brandt was injured in a collision at a base. The Diagnosis: mild oblique strain. This is a day-to-day injury expected to last 3 days. | | Vaughan Millers: CL Juan Benavidez was injured while pitching. The Diagnosis: oblique strain. He's expected to miss about 4 weeks. | | Guelph Royals: MR Esteban Ramírez was injured while pitching. The Diagnosis: hamstring soreness. He's expected to miss about 2 days. |
| Wednesday, August 8th, 1973 | | Vaughan Millers: LF Mike Roberts was injured while running the bases. The Diagnosis: twisted ankle. This is a day-to-day injury expected to last 5 days. |
| Tuesday, August 7th, 1973 | | Timmins Jolt: 3B Charlie Johnston is ill. The Diagnosis: flu. This is a day-to-day injury expected to last 1 day. | | Timmins Jolt: RF Alfredo Ortíz was injured while stealing a base. The Diagnosis: oblique strain. He's expected to miss about 5-6 weeks. | | Brantford Bells: SS Ricardo Sánchez was injured in a collision at a base. The Diagnosis: strained rib cage muscle. He's expected to miss about 3 weeks. |
| Monday, August 6th, 1973 | | Thornhill Blue Sox: LF Dan Kramer was injured on a defensive play. The Diagnosis: strained rib cage muscle. This is a day-to-day injury expected to last one week. | | Thornhill Blue Sox: SS Arthur Brandt was injured while running the bases. The Diagnosis: sore ankle. This is a day-to-day injury expected to last 3 days. | | Vaughan Millers: 3B Malcolm MacIntyre was injured while running the bases. The Diagnosis: strained abdominal muscle. He's expected to miss about 2 weeks. |
| Sunday, August 5th, 1973 | | Timmins Jolt: RF José Pérez was injured while running the bases. The Diagnosis: knee tendinitis. He's expected to miss about 1-2 weeks. | | Millet Bluesmen: MR Ken López was injured while pitching. The Diagnosis: sprained ankle. This is a day-to-day injury expected to last 2 weeks. | | Thornhill Blue Sox: 3B Ellis Caldicott was injured while throwing the ball. The Diagnosis: calf strain. He's expected to miss about 2-3 weeks. |
| Saturday, August 4th, 1973 | | Timmins Jolt: Manuel Pacheco has suffered a setback in his recovery. He is not expected to recover for another 4 days. | | Brantford Bells: SS Ricardo Sánchez was injured while throwing the ball. The Diagnosis: sore ankle. This is a day-to-day injury expected to last 2 days. |
| Friday, August 3rd, 1973 | | Vaughan Millers: LF Mario Díaz was injured while running the bases. The Diagnosis: torn quadriceps. He's expected to miss about 6-7 weeks. | | Peterborough Locks: LF Allen Robinson was injured being hit by a pitch. The Diagnosis: dislocated finger. This is a day-to-day injury expected to last 1 day. |
| Wednesday, August 1st, 1973 | | Hamilton Steelers: LF Andrew Buss was injured on a defensive play. The Diagnosis: intercostal strain. He's expected to miss about 4 days. |
| Tuesday, July 31st, 1973 | | Pickering Lakers: SS Foster Jones was injured in a collision at a base. The Diagnosis: sprained ankle. He's expected to miss about 3 weeks. |
| Monday, July 30th, 1973 | | Kitchener Marshalls: SS Tom Galmer was injured while throwing the ball. The Diagnosis: biceps strain. He's expected to miss about 6 weeks. |
| Saturday, July 28th, 1973 | | Port Credit Traders: RF Andrés Pereira was injured while throwing the ball. The Diagnosis: forearm soreness. This is a day-to-day injury expected to last one week. |
| Friday, July 27th, 1973 | | Brampton Roses: RF Alfredo Ramos was injured being hit by a pitch. The Diagnosis: bruised thigh. This is a day-to-day injury expected to last one week. |
| Wednesday, July 25th, 1973 | | Timmins Jolt: RF Manuel Pacheco was injured while running the bases. The Diagnosis: ankle soreness. He's expected to miss about 1-2 weeks. | | Welland Bridges: SP Armando Smith was injured while pitching. The Diagnosis: finger blister. This is a day-to-day injury expected to last 4 days. | | Brampton Roses: SS César Rivera was injured while running the bases. The Diagnosis: oblique strain. He's expected to miss about 6 weeks. |
| Sunday, July 22nd, 1973 | | Ajax Cruisers: MR Aurelio Domínguez was injured while pitching. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last 6 days. | | Keswick Ice Fishers: CF Bernard Jones was injured on a defensive play. The Diagnosis: sprained thumb. He's expected to miss about 5-6 weeks. |
| Friday, July 20th, 1973 | | Oshawa Carriages: Wally Hickman has suffered a setback in his recovery. He is not expected to recover for another 6 days. |
| Thursday, July 19th, 1973 | | Vaughan Millers: 1B Britt Bradshaw was injured while running the bases. The Diagnosis: hip strain. He's expected to miss about 3-4 weeks. | | Oshawa Carriages: 2B Sloan Leach was injured on a defensive play. The Diagnosis: back soreness. He's expected to miss about 2 weeks. | | Guelph Royals: SP Francisco Galindo was injured while pitching. The Diagnosis: surgery to remove bone spur (elbow). He's expected to miss about 4 months. |
| Wednesday, July 18th, 1973 | | St. Catherines Wildcats: LF Pedro Saucedo was injured while running the bases. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last 6 days. |
| Tuesday, July 17th, 1973 | | Keswick Ice Fishers: MR Nesto Romero was injured while pitching. The Diagnosis: sprained ankle. This is a day-to-day injury expected to last one week. | | Ajax Cruisers: SP Claude Allen was injured while pitching. The Diagnosis: radial nerve (elbow) decompression surgery. He's expected to miss about 7 months. | | Peterborough Locks: C César Villarreal was injured being hit by a pitch. The Diagnosis: bruised forearm. This is a day-to-day injury expected to last 2 days. | | Kitchener Marshalls: LF Kian Mountford was injured on a defensive play. The Diagnosis: strained oblique. He's expected to miss about 3 weeks. |
| Monday, July 16th, 1973 | | Oshawa Carriages: MR Wally Hickman was injured while pitching. The Diagnosis: mild oblique strain. This is a day-to-day injury expected to last one week. | | Peterborough Locks: MR Kip Cameron was injured while pitching. The Diagnosis: sore shoulder. He's expected to miss about 6 days. | | Kitchener Marshalls: SS Tom Galmer was injured in a collision at a base. The Diagnosis: bruised neck. This is a day-to-day injury expected to last 5 days. | | Guelph Royals: C Kevin Sullivan was injured while throwing the ball. The Diagnosis: sore shoulder. He's expected to miss about 5 weeks. |
| Sunday, July 15th, 1973 | | Pickering Lakers: SP Michael Rice was injured while pitching. The Diagnosis: sore back. This is a day-to-day injury expected to last 6 days. | | Kitchener Marshalls: SP Mason Clarke was injured while pitching. The Diagnosis: fractured shoulder blade. He's expected to miss about 4 weeks. | | St. Catherines Wildcats: CF Bill Little was injured while running the bases. The Diagnosis: strained rib cage muscle. This is a day-to-day injury expected to last one week. |
| Thursday, July 12th, 1973 | | Timmins Jolt: Charlie Johnston has suffered a setback in his recovery. He is not expected to recover for another one week. | | Thornhill Blue Sox: CF Bob Becker was injured while running the bases. The Diagnosis: back tightness. This is a day-to-day injury expected to last 6 days. | | Ajax Cruisers: 2B Keiran Birss was injured in a collision at a base. The Diagnosis: strained hamstring. He's expected to miss about 5 weeks. | | Pickering Lakers: SP Javier Lima was injured while pitching. The Diagnosis: partially torn labrum. He's expected to miss about 3 months. |
| Sunday, July 8th, 1973 | | Uxbridge Celts: SP Hunter Curtis was injured while pitching. The Diagnosis: strained triceps. He's expected to miss about 4 weeks. |
| Saturday, July 7th, 1973 | | Guelph Royals: Joe Booker has suffered a setback in his recovery. He is not expected to recover for another 5 days. |
| Wednesday, July 4th, 1973 | | Peterborough Locks: RF Matt Rose was injured on a defensive play. The Diagnosis: chronic back soreness. He's expected to miss about 3 weeks. | | Port Credit Traders: 1B Stanley MacIntyre was injured in a collision at a base. The Diagnosis: foot contusion. He's expected to miss about one week. |
| Monday, July 2nd, 1973 | | Timmins Jolt: 3B Charlie Johnston was injured while running the bases. The Diagnosis: sprained ankle. He's expected to miss about 2 weeks. | | Thornhill Blue Sox: SP Ab Koremans was injured while pitching. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last 4 days. |
| Sunday, July 1st, 1973 | | Guelph Royals: 2B Joe Booker was injured while running the bases. The Diagnosis: hand soreness. This is a day-to-day injury expected to last one week. | | Kitchener Marshalls: CL Fred Carter was injured while pitching. The Diagnosis: mild hamstring strain. This is a day-to-day injury expected to last 2 days. |
| Saturday, June 30th, 1973 | | St. Catherines Wildcats: SS Paul Carroll was injured while running the bases. The Diagnosis: quadriceps soreness. This is a day-to-day injury expected to last one week. |
| Friday, June 29th, 1973 | | Millet Bluesmen: MR Hoyt Anderson was injured while pitching. The Diagnosis: partially torn labrum. He's expected to miss about 2 months. |
| Wednesday, June 27th, 1973 | | Pickering Lakers: SS Foster Jones was injured in a collision at a base. The Diagnosis: torn ankle ligaments. He's expected to miss about 3-4 weeks. | | Keswick Ice Fishers: CL Pedro Delgado was injured while pitching. The Diagnosis: shoulder tendinitis. He's expected to miss about 3-4 weeks. | | Vaughan Millers: LF Mike Roberts was injured while running the bases. The Diagnosis: strained back. This is a day-to-day injury expected to last 6 days. | | Brantford Bells: RF Tadao Tanaka was injured while running the bases. The Diagnosis: latissimus dorsi strain. He's expected to miss about 4 weeks. |
| Tuesday, June 26th, 1973 | | Timmins Jolt: Jude Hudson has suffered a setback in his recovery. He is not expected to recover for another 2 weeks. | | Oshawa Carriages: 1B Chris Auten was injured while running the bases. The Diagnosis: groin tightness. This is a day-to-day injury expected to last 2 days. |
| Monday, June 25th, 1973 | | Kitchener Marshalls: 3B Pete Dodds was injured being hit by a pitch. The Diagnosis: concussion. This is a day-to-day injury expected to last 4 days. | | Port Credit Traders: RF Andrés Pereira was injured on a defensive play. The Diagnosis: hamstring strain. He's expected to miss about 4 weeks. |
| Saturday, June 23rd, 1973 | | Millet Bluesmen: RF Juan Mejía was injured while stealing a base. The Diagnosis: mild abdominal strain. This is a day-to-day injury expected to last 1 day. | | Millet Bluesmen: 2B Bernardo González was injured while throwing the ball. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last 2 days. | | Pickering Lakers: CF Cale Parsons was injured on a defensive play. The Diagnosis: intercostal strain. He's expected to miss about 2 weeks. | | Welland Bridges: SP Federico García was injured while pitching. The Diagnosis: sore thumb. This is a day-to-day injury expected to last 1 day. |
| Wednesday, June 20th, 1973 | | Keswick Ice Fishers: 3B Jason Leonard was injured in a collision at a base. The Diagnosis: bruised finger. This is a day-to-day injury expected to last 2 days. | | Timmins Jolt: CL Raúl León was injured while pitching. The Diagnosis: back tightness. This is a day-to-day injury expected to last 1 day. |
| Tuesday, June 19th, 1973 | | Oshawa Carriages: SP Matt Jones was injured while running the bases. The Diagnosis: sore hamstring. This is a day-to-day injury expected to last 2 days. | | Kitchener Marshalls: LF Ramón Morales was injured while running the bases. The Diagnosis: oblique strain. He's expected to miss about 6 weeks. |
| Monday, June 18th, 1973 | | Peterborough Locks: RF Joe Hoffman was injured while running the bases. The Diagnosis: high ankle sprain. He's expected to miss about 8 weeks. |
| Sunday, June 17th, 1973 | | Vaughan Millers: SP Dave Kidd was injured while pitching. The Diagnosis: ulnar nerve irritation. He's expected to miss about 4 months. |
| Saturday, June 16th, 1973 | | Guelph Royals: 3B Gabriel Salazar was injured while throwing the ball. The Diagnosis: oblique strain. He's expected to miss about 5 days. |
| Friday, June 15th, 1973 | | Peterborough Locks: SP Mathew Banks was injured while pitching. The Diagnosis: surgery to remove bone spur (elbow). He's expected to miss about 4-5 months. |
| Thursday, June 14th, 1973 | | St. Catherines Wildcats: CF Juan Gonzáles was injured being hit by a pitch. The Diagnosis: bruised shoulder. This is a day-to-day injury expected to last 6 days. | | Hamilton Steelers: SS Rodrigo Ramos was injured while running the bases. The Diagnosis: sore hamstring. This is a day-to-day injury expected to last 1 day. |
| Monday, June 11th, 1973 | | Uxbridge Celts: Roy Roberts has suffered a setback in his recovery. He is not expected to recover for another 3 weeks. |
| Friday, June 8th, 1973 | | Thornhill Blue Sox: SP Ab Koremans was injured while pitching. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last 5 days. | | Timmins Jolt: CF Jude Hudson was injured on a defensive play. The Diagnosis: torn meniscus (knee). He's expected to miss about 4 weeks. | | Vaughan Millers: SS Júlio Asconcio was injured while throwing the ball. The Diagnosis: partially torn labrum. He's expected to miss about 2 months. | | St. Catherines Wildcats: SP Tracy Lee was injured while pitching. The Diagnosis: mild oblique strain. This is a day-to-day injury expected to last 4 days. | | St. Catherines Wildcats: MR Burt Pearcy was injured while pitching. The Diagnosis: sore shoulder. He's expected to miss about 8 weeks. | | Welland Bridges: SP Federico García was injured while pitching. The Diagnosis: shoulder soreness. This is a day-to-day injury expected to last 4 days. | | Hamilton Steelers: SP Darrell Hood was injured while pitching. The Diagnosis: back tightness. This is a day-to-day injury expected to last 2 days. | | Hamilton Steelers: MR Louis Wade was injured while pitching. The Diagnosis: strained back. He's expected to miss about 1-2 weeks. |
| Thursday, June 7th, 1973 | | Brantford Bells: Rubén Quiñones has suffered a setback in his recovery. He is not expected to recover for another 1-2 weeks. | | Millet Bluesmen: MR Hoyt Anderson was injured while pitching. The Diagnosis: mild hamstring strain. This is a day-to-day injury expected to last 6 days. | | Brantford Bells: LF José Santos was injured while running the bases. The Diagnosis: strained rib cage muscle. This is a day-to-day injury expected to last 5 days. | | Kitchener Marshalls: 2B Jessie Holloway was injured while running the bases. The Diagnosis: strained hamstring. He's expected to miss about 6 weeks. |
| Wednesday, June 6th, 1973 | | Uxbridge Celts: SP Fraser Shen was injured while pitching. The Diagnosis: finger blister. He's expected to miss about 2 weeks. |
| Tuesday, June 5th, 1973 | | Vaughan Millers: 1B Britt Bradshaw was injured while running the bases. The Diagnosis: knee tendinitis. He's expected to miss about 3-4 weeks. | | Kitchener Marshalls: 1B Bruno Yglsias was injured in a collision at a base. The Diagnosis: hamstring strain. He's expected to miss about 5 weeks. |
| Saturday, June 2nd, 1973 | | Uxbridge Celts: MR Ted Castor was injured while pitching. The Diagnosis: sore elbow. This is a day-to-day injury expected to last 6 days. | | Brantford Bells: SS Ricardo Sánchez was injured in a collision at a base. The Diagnosis: sprained ankle. He's expected to miss about 3 weeks. | | Brampton Roses: CL Alfredo Mondoza was injured while pitching. The Diagnosis: neck stiffness. This is a day-to-day injury expected to last 3 days. |
| Friday, June 1st, 1973 | | Uxbridge Celts: SP Jim Blackwell was injured while pitching. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last 2 days. | | Millet Bluesmen: SP Jared Richardson was injured while pitching. The Diagnosis: elbow inflammation. He's expected to miss about 3 months. |
| Tuesday, May 29th, 1973 | | Thornhill Blue Sox: 2B Luis Bernard was injured in a collision at a base. The Diagnosis: partially torn labrum. He's expected to miss about 5-6 weeks. | | Peterborough Locks: C César Villarreal was injured in a collision at a base. The Diagnosis: mild shoulder strain. He's expected to miss about 2 weeks. | | Pickering Lakers: LF Ánibal Ramírez was injured on a defensive play. The Diagnosis: herniated disc (back). He's expected to miss about 3-4 weeks. |
| Monday, May 28th, 1973 | | Hamilton Steelers: 3B Gerald Morris was injured while throwing the ball. The Diagnosis: sore elbow. This is a day-to-day injury expected to last one week. |
| Saturday, May 26th, 1973 | | Millet Bluesmen: SS Tom Thomas was injured while running the bases. The Diagnosis: strained rib cage muscle. This is a day-to-day injury expected to last 4 days. | | Millet Bluesmen: MR Manny Núñes was injured while pitching. The Diagnosis: strained abdominal muscle. He's expected to miss about 2 weeks. | | Peterborough Locks: SP Mathew Banks was injured while pitching. The Diagnosis: forearm stiffness. He's expected to miss about 6 days. | | Timmins Jolt: CF Ramón Gonzáles was injured on a defensive play. The Diagnosis: herniated disc (back). He's expected to miss about 3 weeks. | | Hamilton Steelers: CF Fernando Ocampo was injured while running the bases. The Diagnosis: strained oblique. He's expected to miss about 2 weeks. | | Brantford Bells: CF Greg Humphrey was injured on a defensive play. The Diagnosis: sprained ankle. He's expected to miss about 3 weeks. |
| Thursday, May 24th, 1973 | | Timmins Jolt: Javier López has suffered a setback in his recovery. He is not expected to recover for another 3 weeks. | | Welland Bridges: SP Jason Brady was injured while pitching. The Diagnosis: mild hamstring strain. This is a day-to-day injury expected to last 2 days. |
| Wednesday, May 23rd, 1973 | | Welland Bridges: 3B Ricardo Benítez was injured while running the bases. The Diagnosis: sprained ankle. He's expected to miss about 2-3 weeks. | | Brampton Roses: MR Cipriano Jiménez was injured while pitching. The Diagnosis: back tightness. He's expected to miss about 1-2 weeks. |
| Tuesday, May 22nd, 1973 | | Oshawa Carriages: SP Rafael López was injured while pitching. The Diagnosis: torn rotator cuff. He's expected to miss about 4 months. |
| Monday, May 21st, 1973 | | Pickering Lakers: 2B Paul Thames was injured while throwing the ball. The Diagnosis: back stiffness. This is a day-to-day injury expected to last 1 day. | | Welland Bridges: SP Mike Parker was injured while pitching. The Diagnosis: torn meniscus (knee). He's expected to miss about 3 months. |
| Sunday, May 20th, 1973 | | Hamilton Steelers: 3B Paul Armstrong was injured while running the bases. The Diagnosis: strained abdominal muscle. He's expected to miss about one week. | | Guelph Royals: SP Dave Mills was injured while pitching. The Diagnosis: sore ankle. This is a day-to-day injury expected to last 1 day. |
| Wednesday, May 16th, 1973 | | Thornhill Blue Sox: 2B Arthur Brandt was injured in a collision at a base. The Diagnosis: hamstring strain. He's expected to miss about 2 weeks. | | Brampton Roses: RF Alfredo Ramos was injured while throwing the ball. The Diagnosis: strained shoulder. He's expected to miss about 6 weeks. |
| Sunday, May 13th, 1973 | | Pickering Lakers: 3B Esteban Salinas was injured while running the bases. The Diagnosis: quadriceps strain. He's expected to miss about 5 weeks. | | Vaughan Millers: MR John Gilbert was injured while pitching. The Diagnosis: sore back. This is a day-to-day injury expected to last 4 days. |
| Saturday, May 12th, 1973 | | Port Credit Traders: MR Raúl Rodríguez was injured while pitching. The Diagnosis: shoulder inflammation. He's expected to miss about 4 months. |
| Friday, May 11th, 1973 | | Timmins Jolt: RF Alfredo Ortíz was injured while running the bases. The Diagnosis: strained quadriceps. He's expected to miss about one week. |
| Thursday, May 10th, 1973 | | Uxbridge Celts: 2B Jorge Castro is ill. The Diagnosis: flu-like symptoms. This is a day-to-day injury expected to last 2 days. |
| Tuesday, May 8th, 1973 | | Hamilton Steelers: 2B Luis Gonzáles was injured while running the bases. The Diagnosis: plantar fascitis. He's expected to miss about 2-3 weeks. | | Brantford Bells: MR Javier Valdéz was injured while pitching. The Diagnosis: mild abdominal strain. This is a day-to-day injury expected to last 4 days. |
| Saturday, May 5th, 1973 | | Pickering Lakers: SP Michael Rice was injured while pitching. The Diagnosis: back tightness. This is a day-to-day injury expected to last 2 weeks. |
| Monday, April 30th, 1973 | | Kitchener Marshalls: C Ronald Parker was injured while running the bases. The Diagnosis: torn abdominal muscle. He's expected to miss about 6 weeks. |
| Sunday, April 29th, 1973 | | Millet Bluesmen: LF Alejandro Carrasco was injured while running the bases. The Diagnosis: calf cramp. This is a day-to-day injury expected to last 2 days. | | Uxbridge Celts: 3B Pedro Ordóñez was injured while running the bases. The Diagnosis: sports hernia. He's expected to miss about 6 weeks. | | Peterborough Locks: LF José Márquez was injured while running the bases. The Diagnosis: strained posterior cruciate ligament. He's expected to miss about 2 weeks. |
| Thursday, April 26th, 1973 | | Uxbridge Celts: C Andrés Torres was injured while running the bases. The Diagnosis: strained oblique. He's expected to miss about 2-3 weeks. |
| Wednesday, April 25th, 1973 | | Hamilton Steelers: SS Brendan Auten was injured while running the bases. The Diagnosis: intercostal strain. He's expected to miss about 5 days. |
| Tuesday, April 24th, 1973 | | Vaughan Millers: MR Anastasio Pérez was injured while pitching. The Diagnosis: tender shoulder. This is a day-to-day injury expected to last 1-2 weeks. |
| Monday, April 23rd, 1973 | | Thornhill Blue Sox: SP José Villarreal was injured while pitching. The Diagnosis: sore ankle. This is a day-to-day injury expected to last 2 days. | | Ajax Cruisers: MR Aurelio Domínguez was injured while pitching. The Diagnosis: mild abdominal strain. This is a day-to-day injury expected to last 1 day. | | Pickering Lakers: 2B Paul Thames was injured in a collision at a base. The Diagnosis: oblique strain. He's expected to miss about 2 weeks. | | St. Catherines Wildcats: SP Rob Cole was injured while pitching. The Diagnosis: surgery to remove bone chips (elbow). He's expected to miss about 6-7 months. |
| Saturday, April 21st, 1973 | | Welland Bridges: 1B Michael Mitchell was injured on a defensive play. The Diagnosis: back spasms. This is a day-to-day injury expected to last 1-2 weeks. |
| Sunday, April 15th, 1973 | | Hamilton Steelers: 3B Gerald Morris was injured on a defensive play. The Diagnosis: fractured finger. He's expected to miss about 6 weeks. |
| Saturday, April 14th, 1973 | | Port Credit Traders: RF Félix González was injured while running the bases. The Diagnosis: fractured hand. He's expected to miss about 6-7 weeks. | | Guelph Royals: 3B Gabriel Salazar was injured while running the bases. The Diagnosis: eye irritation. This is a day-to-day injury expected to last 1 day. | | Brampton Roses: 1B Juan Herrera was injured on a defensive play. The Diagnosis: bruised wrist. He's expected to miss about one week. |
| Monday, April 9th, 1973 | | Timmins Jolt: CF Woody Robinson was injured on a defensive play. The Diagnosis: strained hamstring. He's expected to miss about 5 weeks. | | Welland Bridges: LF Mario Hernández was injured in a collision at a base. The Diagnosis: ankle soreness. He's expected to miss about 1-2 weeks. |
| Thursday, April 5th, 1973 | | Timmins Jolt: SP Rick Branch is ill. The Diagnosis: flu-like symptoms. This is a day-to-day injury expected to last 1 day. |
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