| Friday, September 19th, 1980 | | 3B Bruce Simmons is ill. The Diagnosis: sinus infection. He's expected to miss about 3 days. |
| Thursday, September 11th, 1980 | | SS Dave Day was injured on a defensive play. The Diagnosis: sprained elbow. He's expected to miss about 3 weeks. |
| Tuesday, September 9th, 1980 | | Bob Cummins has suffered a setback in his recovery. He is not expected to recover for another 2 weeks. |
| Monday, September 8th, 1980 | | SS Will Pitts was injured in a collision at a base. The Diagnosis: strained rib cage muscle. He's expected to miss about 2-3 weeks. |
| Wednesday, September 3rd, 1980 | | MR Michael Mack was injured while pitching. The Diagnosis: shoulder inflammation. He's expected to miss about 2-3 weeks. |
| Tuesday, September 2nd, 1980 | | RF Yugoro Nakashima was injured on a defensive play. The Diagnosis: bruised shin. This is a day-to-day injury expected to last 3 days. |
| Sunday, August 24th, 1980 | | Octávio López has suffered a setback in his recovery. He is not expected to recover for another 2 weeks. |
| Thursday, August 14th, 1980 | | CF Bob Cummins was injured while throwing the ball. The Diagnosis: strained forearm. He's expected to miss about 4 weeks. |
| Friday, August 1st, 1980 | | RF Carl Nicholson was injured while throwing the ball. The Diagnosis: back spasms. This is a day-to-day injury expected to last 3 days. |
| Friday, July 11th, 1980 | | RF Ramiro Gómez was injured while running the bases. The Diagnosis: strained hamstring. He's expected to miss about 5 weeks. |
| Monday, June 30th, 1980 | | 1B Bob Holloway was injured while running the bases. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last one week. |
| Thursday, June 26th, 1980 | | 2B Fred Foster was injured while stealing a base. The Diagnosis: heel soreness. This is a day-to-day injury expected to last 2 days. |
| Tuesday, June 24th, 1980 | | 3B Will Pitts was injured while throwing the ball. The Diagnosis: sore elbow. This is a day-to-day injury expected to last 3 days. |
| Thursday, June 19th, 1980 | | MR Sancho Villanueva was injured while pitching. The Diagnosis: sore shoulder. He's expected to miss about 1-2 weeks. |
| Sunday, June 1st, 1980 | | SP Octávio López was injured while pitching. The Diagnosis: biceps tendinitis. He's expected to miss about 3 months. |
| Saturday, May 17th, 1980 | | SP Dan Stephens was injured while pitching. The Diagnosis: forearm tendinitis. He's expected to miss about 3 weeks. |
| Sunday, May 11th, 1980 | | SP Will Clark was injured while pitching. The Diagnosis: torn rotator cuff. He's expected to miss about 8 months. |
| Thursday, May 1st, 1980 | | RF Ramiro Gómez was injured while throwing the ball. The Diagnosis: sore ankle. This is a day-to-day injury expected to last 2 days. |
| Monday, April 21st, 1980 | | SP Will Clark was injured while pitching. The Diagnosis: sore back. This is a day-to-day injury expected to last one week. |
| Saturday, April 5th, 1980 | | 2B Fernando Hernández was injured while running the bases. The Diagnosis: back soreness. He's expected to miss about 5 days. |
| Friday, April 4th, 1980 | | LF Sandy Pearson was injured in a collision at a base. The Diagnosis: fractured rib. He's expected to miss about 4 weeks. |
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