| Tuesday, April 9th, 1957 | Placed LF Marco Weerheim on the 15-day disabled list. | Tuesday, November 6th, 1956 | Activated 2B Raúl López from the disabled list. | Tuesday, September 4th, 1956 | RF Paul Chandler retires. | Signed Manager Sergio Garza to a 3-year contract extension. | Signed Pitching Coach Brit Murphy to a 2-year contract extension. | Signed Hitting Coach Vince Welford to a 3-year contract extension. | |
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