| Tuesday, August 26th, 1980 | | Arturo Gallegos has suffered a setback in his recovery. He is not expected to recover for another one week. |
| Wednesday, August 20th, 1980 | | SS Henry Scott is ill. The Diagnosis: flu-like symptoms. This is a day-to-day injury expected to last 2 days. |
| Tuesday, August 19th, 1980 | | 3B Arturo Gallegos was injured while throwing the ball. The Diagnosis: back tightness. This is a day-to-day injury expected to last 2 weeks. |
| Wednesday, August 13th, 1980 | | CF Peter O'Brien was injured on a defensive play. The Diagnosis: thumb contusion. He's expected to miss about one week. |
| Sunday, July 20th, 1980 | | RF José Costello was injured while running the bases. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last 6 days. |
| Monday, July 7th, 1980 | | 2B Jack Porter was injured while running the bases. The Diagnosis: adductor strain. This is a day-to-day injury expected to last 4 days. |
| Tuesday, July 1st, 1980 | | CF Tony Ortíz was injured on a defensive play. The Diagnosis: herniated disc (back). He's expected to miss about 4 weeks. |
| Monday, June 23rd, 1980 | | 3B Martin White was injured while throwing the ball. The Diagnosis: shoulder tendinitis. He's expected to miss about 6 days. |
| Friday, May 30th, 1980 | | CF Peter O'Brien was injured in a collision at a base. The Diagnosis: strained oblique. He's expected to miss about 7 weeks. |
| Thursday, May 8th, 1980 | | LF Tony Ortíz was injured on a defensive play. The Diagnosis: back tightness. He's expected to miss about 2 weeks. |
| Thursday, April 24th, 1980 | | 2B Jack Porter was injured while running the bases. The Diagnosis: quadriceps strain. He's expected to miss about one week. |
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