| Thursday, July 30th, 1964 | | 3B José Torres was injured while throwing the ball. The Diagnosis: shoulder tendinitis. He's expected to miss about 4 weeks. |
| Wednesday, July 8th, 1964 | | LF Ricky Brown was injured being hit by a pitch. The Diagnosis: fractured finger. He's expected to miss about 6 weeks. | | 2B Iván Sánchez was injured in a collision at a base. The Diagnosis: fractured finger. He's expected to miss about 6 weeks. |
| Tuesday, June 23rd, 1964 | | SP Bill Yarbrough was injured while pitching. The Diagnosis: recurring back spasms. He's expected to miss about 4 weeks. |
| Sunday, June 7th, 1964 | | RF Bob Brown was injured while running the bases. The Diagnosis: torn abdominal muscle. He's expected to miss about 5 weeks. |
| Thursday, June 4th, 1964 | | SP Xiu-tou Chao was injured while pitching. The Diagnosis: mild shoulder inflammation. He's expected to miss about 2 weeks. |
| Wednesday, May 6th, 1964 | | 3B Francisco Rodríguez is ill. The Diagnosis: sinus infection. He's expected to miss about 1 day. |
| Wednesday, April 15th, 1964 | | SP Rodrigo Ordóñez was injured while pitching. The Diagnosis: back spasms. This is a day-to-day injury expected to last 5 days. |
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