| | | Saturday, July 21st, 1951 | | Activated SP Victor Mowry from the disabled list. |
| Friday, June 15th, 1951 | | Received MR Hubert Kerr from Double A Harlingen. | | Promoted SP Hubert Kerr to Double A Harlingen. | | Received SP Ray Dorsey from Double A Harlingen. | | Drafted SP Walter Lewis in the 1951 first-year player draft (Round 6, Pick 4, 84th overall pick). | | Drafted RF Manuel Hernández in the 1951 first-year player draft (Round 7, Pick 4, 100th overall pick). | | Drafted MR Jaime Rodríguez in the 1951 first-year player draft (Round 8, Pick 4, 116th overall pick). | | Drafted 1B Jing-bo Yang in the 1951 first-year player draft (Round 9, Pick 4, 132nd overall pick). | | Drafted MR Morgan Berry in the 1951 first-year player draft (Round 10, Pick 4, 148th overall pick). | | Promoted RF Manuel Hernández to Double A Harlingen. | | Promoted 1B Jing-bo Yang to Double A Harlingen. | | Received SP Michael Willis from Double A Harlingen. | | Received MR Hubert Kerr from Double A Harlingen. |
| Wednesday, May 2nd, 1951 | | Signed free agent MR Lou Raines to a minor league contract. |
| Sunday, April 29th, 1951 | | Signed free agent C John Thompson to a minor league contract. |
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