| Tuesday, August 30th, 1955 | Activated RF Ramón Castro from the disabled list. | Saturday, July 9th, 1955 | Activated RF Ryo Suzuki from the disabled list. | Wednesday, June 15th, 1955 | Drafted 2B Nathan Ward in the 1955 first-year player draft (Round 6, Pick 12, 101st overall pick). | Drafted MR Alfred Smith in the 1955 first-year player draft (Round 7, Pick 12, 118th overall pick). | Drafted 3B Ramón Castro in the 1955 first-year player draft (Round 8, Pick 12, 134th overall pick). | Drafted SP Johnny Curran in the 1955 first-year player draft (Round 9, Pick 12, 150th overall pick). | Drafted 3B António Alejo in the 1955 first-year player draft (Round 10, Pick 12, 166th overall pick). | Promoted MR Benny Watts to Double A Port Lavaca. | Received SP Mike Foster from Double A Port Lavaca. | Monday, December 27th, 1954 | Activated MR Raúl Trujillo from the disabled list. | Sunday, December 12th, 1954 | Placed MR Raúl Trujillo on the 15-day disabled list. | Sunday, September 12th, 1954 | Activated RF Jo-hsi Yen from the disabled list. | |
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