| Tuesday, October 9th, 1951 | Activated 2B Eduardo Árias from the disabled list. | Sunday, October 7th, 1951 | Activated 2B Mark Andrews from the disabled list. | Friday, September 28th, 1951 | Activated LF Pablo Márquez from the disabled list. | Tuesday, September 25th, 1951 | Activated SP Phil Gilmore from the disabled list. | Monday, September 24th, 1951 | Placed 2B Eduardo Árias on the 15-day disabled list. | Monday, September 17th, 1951 | Placed 2B Mark Andrews on the 15-day disabled list. | Activated CF Félix González from the disabled list. | Tuesday, August 14th, 1951 | Signed Rob Parks to a minor league contract with a signing bonus of $36,000. | Friday, August 10th, 1951 | Signed Gene McCoy to a minor league contract with a signing bonus of $6,400. | Sunday, July 29th, 1951 | Signed Pedro Mata to a minor league contract with a signing bonus of $40,000. | Monday, July 23rd, 1951 | Signed Luis Montalvo to a minor league contract with a signing bonus of $25,900. | Wednesday, July 18th, 1951 | Signed Mark Gilmore to a minor league contract with a signing bonus of $5,400. | Saturday, April 21st, 1951 | Placed MR Ron Ash on the 15-day disabled list. | Purchased the contract of SP Les Strong from Triple A Uxbridge. | |
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