| Tuesday, August 16th, 1977 | | CL Bernardo Martínez was injured while pitching. The Diagnosis: torn labrum (Shoulder). He's expected to miss about 10 months. |
| Monday, July 11th, 1977 | | MR Paul Brown was injured while pitching. The Diagnosis: back stiffness. This is a day-to-day injury expected to last 3 days. |
| Saturday, July 9th, 1977 | | 2B Joe Jones was injured while throwing the ball. The Diagnosis: mild hamstring strain. This is a day-to-day injury expected to last 3 days. |
| Friday, July 8th, 1977 | | 3B Juan Sánchez is ill. The Diagnosis: cold. This is a day-to-day injury expected to last 1 day. |
| Saturday, July 2nd, 1977 | | 1B Rick Blanchard is ill. The Diagnosis: heart palpitations. He's expected to miss about 3 days. |
| Tuesday, June 28th, 1977 | | SP Víctor Segura was injured while pitching. The Diagnosis: shoulder soreness. This is a day-to-day injury expected to last 1-2 weeks. |
| Thursday, June 23rd, 1977 | | SP Jorge González was injured while pitching. The Diagnosis: back tightness. This is a day-to-day injury expected to last 1 day. |
| Thursday, June 16th, 1977 | | MR Ben Davis was injured while pitching. The Diagnosis: strained back. He's expected to miss about one week. |
| Monday, April 18th, 1977 | | 3B Alvin Reed was injured while running the bases. The Diagnosis: quadriceps strain. He's expected to miss about 2 weeks. |
| Saturday, April 16th, 1977 | | C Henry Clark was injured in a collision at home plate. The Diagnosis: shoulder tendinitis. He's expected to miss about 1-2 weeks. |
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