| Thursday, July 30th, 1964 | | MR José Montaño was injured while pitching. The Diagnosis: shoulder inflammation. He's expected to miss about 4 months. |
| Sunday, July 26th, 1964 | | SP Yoshiki Kichida was injured while pitching. The Diagnosis: oblique strain. He's expected to miss about 4 weeks. |
| Friday, July 24th, 1964 | | SP Pedro Flores was injured while pitching. The Diagnosis: sore shoulder. He's expected to miss about 3 weeks. |
| Saturday, July 18th, 1964 | | 1B José Chávez was injured while running the bases. The Diagnosis: back tightness. This is a day-to-day injury expected to last 5 days. |
| Thursday, July 9th, 1964 | | RF Andrew Eaton was injured on a defensive play. The Diagnosis: strained hamstring. He's expected to miss about 4 weeks. |
| Saturday, June 20th, 1964 | | SS James MacDonald was injured while throwing the ball. The Diagnosis: mild shoulder strain. He's expected to miss about 5 days. |
| Thursday, May 28th, 1964 | | SP Jesús Morales was injured while pitching. The Diagnosis: sore shoulder. He's expected to miss about 3 days. |
| Monday, May 18th, 1964 | | C Roberto Maes was injured while running the bases. The Diagnosis: strained groin. He's expected to miss about 5 weeks. |
| Saturday, May 2nd, 1964 | | SS Ricardo Sánchez was injured while running the bases. The Diagnosis: quadriceps strain. He's expected to miss about 5 days. |
| Thursday, April 9th, 1964 | | SP Pedro Flores was injured while pitching. The Diagnosis: torn triceps. He's expected to miss about 3-4 months. |
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