| Thursday, July 27th, 1978 | | 3B Alan Hood was injured while throwing the ball. The Diagnosis: finger blister. He's expected to miss about 1-2 weeks. |
| Monday, July 24th, 1978 | | RF Jesús Colón was injured while running the bases. The Diagnosis: fractured hand. He's expected to miss about 6 weeks. |
| Thursday, July 20th, 1978 | | MR Jared Roy was injured while pitching. The Diagnosis: sore back. This is a day-to-day injury expected to last 6 days. |
| Wednesday, June 28th, 1978 | | 2B Juan Ríos was injured while running the bases. The Diagnosis: bruised wrist. This is a day-to-day injury expected to last 3 days. |
| Friday, June 23rd, 1978 | | CF Pedro Sotelo was injured being hit by a pitch. The Diagnosis: fractured ulna (arm). He's expected to miss about 5-6 weeks. |
| Tuesday, June 20th, 1978 | | C Héctor Hopper was injured being hit by a pitch. The Diagnosis: bruised knee. This is a day-to-day injury expected to last 1 day. |
| Sunday, June 18th, 1978 | | C Wei-kang Shuang was injured being hit by a pitch. The Diagnosis: bruised foot. This is a day-to-day injury expected to last 3 days. |
| Saturday, June 3rd, 1978 | | RF Norm Wolf is ill. The Diagnosis: flu-like symptoms. This is a day-to-day injury expected to last 4 days. |
| Thursday, June 1st, 1978 | | SS Cipriano Bonilla was injured in a collision at a base. The Diagnosis: torn meniscus (knee). He's expected to miss about 3 months. |
| Thursday, May 25th, 1978 | | RF Jorge Águila was injured while running the bases. The Diagnosis: torn quadriceps. He's expected to miss about 5 weeks. |
| Tuesday, May 23rd, 1978 | | 3B Roberto Uribes was injured while running the bases. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last 3 days. |
| Tuesday, May 16th, 1978 | | Ricardo Chávez has suffered a setback in his recovery. He is not expected to recover for another one week. |
| Friday, May 12th, 1978 | | RF Ricardo Chávez was injured on a defensive play. The Diagnosis: neck spasms. He's expected to miss about one week. |
| Thursday, May 11th, 1978 | | C Héctor Hopper was injured while running the bases. The Diagnosis: plantar fascitis. He's expected to miss about 6 weeks. |
| Wednesday, May 10th, 1978 | | SP Joe Griffin was injured while pitching. The Diagnosis: sprained elbow. He's expected to miss about 2 weeks. | | LF Michael Freeburn was injured on a defensive play. The Diagnosis: strained hamstring. He's expected to miss about 2 weeks. |
| Friday, May 5th, 1978 | | CF Scott Joplin was injured on a defensive play. The Diagnosis: fractured thumb. He's expected to miss about 4 weeks. |
| Thursday, May 4th, 1978 | | 3B Danny Ellis was injured in a collision at a base. The Diagnosis: back tightness. He's expected to miss about 2 weeks. | | SP Shinji Nakao was injured while pitching. The Diagnosis: sore elbow. This is a day-to-day injury expected to last 1-2 weeks. |
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