| | | Saturday, August 17th, 1974 | | Activated CF Harley Wright from the disabled list. |
| Friday, August 2nd, 1974 | | Placed CF Harley Wright on the 15-day disabled list. |
| Tuesday, July 30th, 1974 | | Placed CL Tomás Marín on the 15-day disabled list. |
| Tuesday, July 9th, 1974 | | Placed LF Carlos Herrera on the 15-day disabled list. |
| Wednesday, June 26th, 1974 | | Activated LF Ryan Johnson from the disabled list. |
| Saturday, June 15th, 1974 | | Promoted SP José Guerrero to Double A San Antonio. | | Promoted MR Carl Prince to Double A San Antonio. | | Promoted LF Carlos Durán to Double A San Antonio. | | Received SP Dave Kidd from Double A San Antonio. | | Received MR Von Myers from Double A San Antonio. | | Received LF Carlos Herrera from Double A San Antonio. | | Drafted 2B Lester O'Brien in the 1974 first-year player draft (Round 6, Pick 4, 106th overall pick). | | Drafted MR Juan González in the 1974 first-year player draft (Round 7, Pick 4, 126th overall pick). | | Drafted CF Harley Wright in the 1974 first-year player draft (Round 8, Pick 4, 146th overall pick). | | Drafted SS Jacob Baker in the 1974 first-year player draft (Round 9, Pick 4, 166th overall pick). | | Drafted SP Gerardo Alvarado in the 1974 first-year player draft (Round 10, Pick 4, 186th overall pick). |
| Wednesday, May 29th, 1974 | | Placed LF Ryan Johnson on the 15-day disabled list. |
| Saturday, May 25th, 1974 | | Activated 2B Manlio Coppola from the disabled list. |
| Monday, October 8th, 1973 | | Activated SS Frank Jones from the disabled list. |
| Sunday, September 30th, 1973 | | Activated CF Bartolo Martínez from the disabled list. |
| Saturday, September 15th, 1973 | | Placed CF Bartolo Martínez on the 15-day disabled list. |
| Wednesday, August 29th, 1973 | | Activated 2B Henry Olson from the disabled list. |
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