| | | Tuesday, August 13th, 1974 | | Signed Jesse O'Connor to a minor league contract with a signing bonus of $50,900. |
| Sunday, August 4th, 1974 | | Signed Ron Wilson to a minor league contract with a signing bonus of $17,200. |
| Friday, July 26th, 1974 | | Signed Ben Rose to a minor league contract with a signing bonus of $18,800. |
| Monday, July 15th, 1974 | | Signed R.J. Henderson to a minor league contract with a signing bonus of $178,400. |
| Saturday, March 16th, 1974 | | Placed SP Guillermo García on the 60-day disabled list. |
| Friday, February 15th, 1974 | | MR Will Wise was designated for assignment, placed on waivers and taken off the 40-man roster. |
| Friday, February 1st, 1974 | | LF Garland Fisher was designated for assignment, placed on waivers and taken off the 40-man roster. |
| Wednesday, December 12th, 1973 | | MR A.R. Page was claimed off waivers from Houston. |
| Wednesday, November 7th, 1973 | | Signed general manager Anastasio Martínez to a 4-year, $55,200 per year contract. |
| Friday, October 12th, 1973 | | Signed free agent SP A.R. Page to a 1-year contract worth a total of $49,700. | | Assigned SP A.R. Page to Triple A Walnut Grove. |
| Monday, October 8th, 1973 | | Signed SP Barry van Es to a 2-year contract extension worth a total of $200,600. | | Signed SP Guillermo García to a 1-year contract extension worth a total of $136,800. | | Signed MR Bruce Hawkins to a 1-year contract extension worth a total of $43,496. | | Signed MR José Villarreal to a 1-year contract extension worth a total of $88,600. | | Signed MR Liben Hakimi to a 1-year contract extension worth a total of $60,100. | | Signed SP John Lancaster to a 2-year contract extension worth a total of $187,400. | | Signed CL Louis-Émile Landry to a 2-year contract extension worth a total of $158,400. | | Signed 3B Tyler Anderson to a 1-year contract extension worth a total of $43,496. | | Signed 2B Raymond Jayne to a 1-year contract extension worth a total of $43,496. | | Signed MR Hervé Leconte to a 1-year contract extension worth a total of $43,496. | | Signed MR Artie Lucas to a 1-year contract extension worth a total of $59,900. | | Signed SP Jeremy Faulkner to a 1-year contract extension worth a total of $120,700. | | Signed MR Chris Pearson to a 1-year contract extension worth a total of $62,900. | | Signed RF Adrián Villanueva to a 1-year contract extension worth a total of $100,100. | | Signed CF Augusto Botequim to a 1-year contract extension worth a total of $44,600. |
| Sunday, October 7th, 1973 | | Signed RF Antony Mathieu to a 1-year contract extension worth a total of $106,300. | | Signed MR Jesús Ortíz to a 1-year contract extension worth a total of $43,496. |
| Saturday, October 6th, 1973 | | Signed SS Martin Bauer to a 3-year contract extension worth a total of $142,800. |
| Wednesday, October 3rd, 1973 | | Signed manager Randy Parker to a 3-year, $55,800 per year contract. | | Signed bench coach Norberto Delgado to a 3-year, $53,600 per year contract. | | Signed team doctor Martin Shafer to a 3-year, $34,900 per year contract. | | Signed scouting director Michael Page to a 1-year, $8,800 per year contract. | | Signed hitting coach Chris Wells to a 5-year, $19,600 per year contract. | | Signed pitching coach Mauro Ramírez to a 3-year, $22,000 per year contract. |
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