| | | Sunday, August 26th, 1951 | | Activated 1B Dan McDaniel from the disabled list. |
| Saturday, August 11th, 1951 | | Placed 1B Dan McDaniel on the 15-day disabled list. |
| Monday, July 16th, 1951 | | Placed CL Monty Hyde on the 15-day disabled list. |
| Thursday, July 12th, 1951 | | Activated SP Chris Johnston from the disabled list. |
| Friday, June 22nd, 1951 | | Placed SP Chris Johnston on the 15-day disabled list. |
| Tuesday, June 19th, 1951 | | Activated SP Ken Zimmerman from the disabled list. |
| Friday, June 15th, 1951 | | Promoted MR Richard Brown to Double A Freeport. | | Received MR Blake MacKay from Double A Freeport. | | Drafted 2B David Wilson in the 1951 first-year player draft (Round 6, Pick 7, 87th overall pick). | | Drafted 3B Will Williams in the 1951 first-year player draft (Round 7, Pick 7, 103rd overall pick). | | Drafted SP Henry Lyon in the 1951 first-year player draft (Round 8, Pick 7, 119th overall pick). | | Drafted C William O'Halloran in the 1951 first-year player draft (Round 9, Pick 7, 135th overall pick). | | Drafted SP Randy Bennett in the 1951 first-year player draft (Round 10, Pick 7, 151st overall pick). | | Promoted 3B Will Williams to Double A Freeport. | | Promoted 2B David Wilson to Double A Freeport. | | Received MR Gan Kung from Double A Freeport. | | Received SP Chris Johnston from Double A Freeport. |
| Sunday, June 10th, 1951 | | Activated SP Mike Scott from the disabled list. |
| Monday, June 4th, 1951 | | Placed SP Ken Zimmerman on the 15-day disabled list. |
| Saturday, May 26th, 1951 | | Placed SP Mike Scott on the 15-day disabled list. |
| Monday, May 14th, 1951 | | Signed free agent MR Jesús Ramírez to a minor league contract. |
| Sunday, April 22nd, 1951 | | Signed free agent MR Manny Leyva to a minor league contract. |
| Wednesday, April 11th, 1951 | | Signed free agent MR Lawrence Hall to a minor league contract. |
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