| Thursday, August 18th, 1955 | Released 1B Bobby Wynn. | Sunday, July 10th, 1955 | Activated SS Alfred Mitchell from the disabled list. | Wednesday, June 29th, 1955 | Placed CF Jesús Ramos on the 15-day disabled list. | Wednesday, June 22nd, 1955 | Placed SP Nick Miller on the 15-day disabled list. | Monday, June 20th, 1955 | Placed SS Alfred Mitchell on the 15-day disabled list. | Wednesday, June 15th, 1955 | Promoted 1B Javier González to Double A Beeville. | Received 2B Dave Reynolds from Double A Beeville. | Drafted CL Russell Lau in the 1955 first-year player draft (Round 6, Pick 5, 94th overall pick). | Drafted C Phil Moser in the 1955 first-year player draft (Round 7, Pick 5, 111st overall pick). | Drafted SP Lloyd Hickman in the 1955 first-year player draft (Round 8, Pick 5, 127th overall pick). | Drafted 3B David Conklin in the 1955 first-year player draft (Round 9, Pick 5, 143rd overall pick). | Drafted 1B Chris Barnard in the 1955 first-year player draft (Round 10, Pick 5, 159th overall pick). | Thursday, June 9th, 1955 | Activated C José Herrera from the disabled list. | Monday, June 6th, 1955 | Activated SP Luis González from the disabled list. | Tuesday, May 24th, 1955 | Placed C José Herrera on the 15-day disabled list. | Saturday, October 16th, 1954 | Released C Lou Spears. | Thursday, September 9th, 1954 | Activated SP Jessie Byer from the disabled list. | Activated LF José García from the disabled list. | |
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