| Monday, August 24th, 1964 | Activated 2B Brad Spencer from the disabled list. | Sunday, August 16th, 1964 | Placed SP José Villarreal on the 15-day disabled list. | Saturday, August 1st, 1964 | Placed SP Wilford Bernard on the 15-day disabled list. | Friday, July 17th, 1964 | Placed CF Manuel Córdova on the 15-day disabled list. | Sunday, June 28th, 1964 | Placed LF José Gonzáles on the 15-day disabled list. | Monday, September 2nd, 1963 | Signed Manager Jason Fowler to a 2-year contract extension. | Signed Hitting Coach Nick Henry to a 1-year contract extension. | |
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