| | | Monday, September 29th, 1975 | | Signed SP Luis Tiant to a 2-year contract extension worth a total of $1,680,000. |
| Saturday, March 1st, 1975 | | Traded $1 in cash to the Denver 14ers, getting 26-year-old minor league third baseman Wayne Garrett and 28-year-old minor league center fielder Rick Monday in return. |
| Wednesday, February 12th, 1975 | | Signed free agent 2B Mike De La Hoz to a 2-year contract worth a total of $5,800,000. |
| Sunday, February 9th, 1975 | | Signed free agent CF Cesar Cedeno to a 3-year contract worth a total of $6,300,000. |
| Friday, November 1st, 1974 | | 2B R. Stennett received a 1-year contract through automatic renewal worth a total of $350,000. | | SS F. Patek received a 1-year contract through automatic renewal worth a total of $350,000. | | SP J. Richard received a 1-year contract through automatic renewal worth a total of $2,200,000. | | CF E. Maddox received a 1-year contract through automatic renewal worth a total of $2,000,000. | | MR A. Fitzmorris received a 1-year contract through automatic renewal worth a total of $500,000. | | MR E. Sprague received a 1-year contract through automatic renewal worth a total of $400,000. | | 3B D. Driessen received a 1-year contract through automatic renewal worth a total of $750,000. | | 1B C. Cooper received a 1-year contract through automatic renewal worth a total of $2,000,000. | | MR C. Williams received a 1-year contract through automatic renewal worth a total of $350,000. | | 2B F. Millan received a 1-year contract through automatic renewal worth a total of $490,000. | | SP B. Hooton received a 1-year contract through automatic renewal worth a total of $750,000. | | SP R. Reuschel received a 1-year contract through automatic renewal worth a total of $2,500,000. | | CL S. Mingori received a 1-year contract through automatic renewal worth a total of $750,000. | | RF J. Orta received a 1-year contract through automatic renewal worth a total of $2,000,000. | | RF B. Murcer received a 1-year contract through automatic renewal worth a total of $670,000. |
| Tuesday, October 29th, 1974 | | SP J. Palmer received a 1-year contract through arbitration worth a total of $4,600,000. | | SP C. Upshaw received a 1-year contract through arbitration worth a total of $3,162,300. | | C D. Josephson received a 1-year contract through arbitration worth a total of $3,520,000. | | MR F. Linzy received a 1-year contract through arbitration worth a total of $3,186,200. | | CF C. Tovar received a 1-year contract through arbitration worth a total of $540,000. | | SP A. Foster received a 1-year contract through arbitration worth a total of $1,606,500. |
| Sunday, June 16th, 1974 | | Traded 20-year-old minor league third baseman G. Brett, 24-year-old minor league left fielder B. Buckner and a 3rd round draft pick to the Montréal Voyageurs, getting 33-year-old reliever F. Linzy and 33-year-old minor league starting pitcher C. Wright in return. |
| Friday, March 1st, 1974 | | Traded 34-year-old minor league left fielder D. Cater to the Chicago Colts, getting 35-year-old minor league starting pitcher J. Kaat in return. |
| Wednesday, February 6th, 1974 | | Signed free agent C T. McCarver to a 3-year contract worth a total of $7,380,000. |
| Sunday, February 3rd, 1974 | | Signed free agent 2B J. Terrell to a 2-year contract worth a total of $1,200,000. |
| Monday, November 5th, 1973 | | 2B R. Stennett received a 1-year contract through automatic renewal worth a total of $300,000. | | SP A. Foster received a 1-year contract through automatic renewal worth a total of $1,000,000. | | SP J. Richard received a 1-year contract through automatic renewal worth a total of $2,200,000. | | CF E. Maddox received a 1-year contract through automatic renewal worth a total of $2,000,000. | | MR A. Fitzmorris received a 1-year contract through automatic renewal worth a total of $500,000. | | MR E. Sprague received a 1-year contract through automatic renewal worth a total of $400,000. | | SS F. Patek received a 1-year contract through automatic renewal worth a total of $300,000. | | MR C. Williams received a 1-year contract through automatic renewal worth a total of $300,000. | | LF B. Oglivie received a 1-year contract through automatic renewal worth a total of $1,000,000. | | C D. Josephson received a 1-year contract through automatic renewal worth a total of $1,500,000. | | SP B. Hooton received a 1-year contract through automatic renewal worth a total of $750,000. | | SP R. Reuschel received a 1-year contract through automatic renewal worth a total of $2,500,000. | | MR S. Mingori received a 1-year contract through automatic renewal worth a total of $750,000. | | 1B C. Cooper received a 1-year contract through automatic renewal worth a total of $2,000,000. | | MR T. House received a 1-year contract through automatic renewal worth a total of $750,000. | | RF J. Orta received a 1-year contract through automatic renewal worth a total of $2,000,000. | | LF H. McRae received a 1-year contract through automatic renewal worth a total of $750,000. |
| Friday, November 2nd, 1973 | | SP J. Palmer received a 1-year contract through arbitration worth a total of $5,000,000. | | SP M. Cuellar received a 1-year contract through arbitration worth a total of $3,219,840. | | CF C. Tovar received a 1-year contract through arbitration worth a total of $600,000. |
| Monday, September 24th, 1973 | | Purchased the contract of SP C. Hough from Triple A Pittsburgh. |
| Wednesday, July 18th, 1973 | | Signed 3B D. Demeter to a 2-year contract extension worth a total of $15,100,000. |
| Saturday, June 16th, 1973 | | Traded 30-year-old minor league third baseman P. Schaal, 38-year-old minor league starting pitcher P. Ramos, a 1st round draft pick and a 2nd round draft pick to the Manhattan Gray Sox, getting 34-year-old left fielder V. Pinson and 30-year-old reliever C. Upshaw in return. |
| Tuesday, February 6th, 1973 | | Signed free agent SS R. Hansen to a 1-year contract worth a total of $940,000. | | Signed free agent C T. McCarver to a 1-year contract worth a total of $3,670,000. |
| Sunday, November 5th, 1972 | | 2B R. Stennett received a 1-year contract through automatic renewal worth a total of $300,000. | | SP A. Foster received a 1-year contract through automatic renewal worth a total of $1,000,000. | | SP J. Richard received a 1-year contract through automatic renewal worth a total of $2,200,000. | | CF E. Maddox received a 1-year contract through automatic renewal worth a total of $2,000,000. | | MR A. Fitzmorris received a 1-year contract through automatic renewal worth a total of $500,000. | | MR E. Sprague received a 1-year contract through automatic renewal worth a total of $400,000. | | SP E. McAnally received a 1-year contract through automatic renewal worth a total of $1,500,000. | | MR C. Williams received a 1-year contract through automatic renewal worth a total of $300,000. | | RF J. Callison becomes a free-agent. | | 1B B. Watson received a 1-year contract through automatic renewal worth a total of $1,500,000. | | LF B. Oglivie received a 1-year contract through automatic renewal worth a total of $1,000,000. | | 1B W. McCovey becomes a free-agent. | | 3B D. Money received a 1-year contract through automatic renewal worth a total of $400,000. | | C D. Josephson received a 1-year contract through automatic renewal worth a total of $1,500,000. | | SS F. Patek received a 1-year contract through automatic renewal worth a total of $300,000. | | SP B. Hooton received a 1-year contract through automatic renewal worth a total of $750,000. | | SP F. Reberger received a 1-year contract through automatic renewal worth a total of $300,000. | | SP R. Reuschel received a 1-year contract through automatic renewal worth a total of $2,500,000. | | SS R. Hansen becomes a free-agent. | | MR S. Mingori received a 1-year contract through automatic renewal worth a total of $750,000. | | 1B C. Cooper received a 1-year contract through automatic renewal worth a total of $2,000,000. | | LF H. McRae received a 1-year contract through automatic renewal worth a total of $750,000. | | MR T. House received a 1-year contract through automatic renewal worth a total of $750,000. | | RF J. Orta received a 1-year contract through automatic renewal worth a total of $2,000,000. | | C G. Borgmann received a 1-year contract through automatic renewal worth a total of $300,000. | | MR B. Humphreys received a 1-year contract through automatic renewal worth a total of $620,000. |
| Thursday, November 2nd, 1972 | | Released 3B T. Perez. | | Released MR J. Grzenda. | | SP J. Palmer received a 1-year contract through arbitration worth a total of $5,121,900. |
| Thursday, October 12th, 1972 | | 1B D. Stuart retires. |
| Saturday, February 19th, 1972 | | Signed free agent 3B P. Schaal to a 2-year contract worth a total of $2,580,000. | | Signed free agent CF A. Phillips to a 1-year contract worth a total of $450,000. |
| Saturday, February 12th, 1972 | | Signed free agent SS D. Maxvill to a 2-year contract worth a total of $900,000. | | Signed free agent 2B G. Beckert to a 2-year contract worth a total of $1,570,000. | | Signed free agent CF C. Tovar to a 2-year contract worth a total of $920,000. | | Signed free agent MR M. Paul to a 1-year contract worth a total of $1,910,000. |
| Monday, February 7th, 1972 | | Placed MR R. Fingers on the 15-day disabled list. | | Demoted RF B. Murcer to Triple A Pittsburgh. | | Traded a 1st round draft pick and a 2nd round draft pick to the Brooklyn Superbas, getting a 1st round draft pick in return. |
| Sunday, February 6th, 1972 | | Signed free agent RF B. Murcer to a 2-year contract worth a total of $1,240,000. |
| Thursday, February 3rd, 1972 | | Signed free agent MR R. Fingers to a 2-year contract worth a total of $1,230,000. |
| Monday, November 1st, 1971 | | C J. Oates received a 1-year contract through automatic renewal worth a total of $780,000. | | 2B F. Millan received a 1-year contract through automatic renewal worth a total of $490,000. | | SP A. Foster received a 1-year contract through automatic renewal worth a total of $1,000,000. | | CF E. Maddox received a 1-year contract through automatic renewal worth a total of $2,000,000. | | CL A. Fitzmorris received a 1-year contract through automatic renewal worth a total of $500,000. | | 3B J. Kenney received a 1-year contract through automatic renewal worth a total of $750,000. | | SP E. McAnally received a 1-year contract through automatic renewal worth a total of $1,500,000. | | MR C. Williams received a 1-year contract through automatic renewal worth a total of $300,000. | | 1B B. Watson received a 1-year contract through automatic renewal worth a total of $1,500,000. | | MR T. Farrell becomes a free-agent. | | SS E. Brinkman received a 1-year contract through automatic renewal worth a total of $300,000. | | LF L. Piniella received a 1-year contract through automatic renewal worth a total of $750,000. | | 3B D. Money received a 1-year contract through automatic renewal worth a total of $400,000. | | SP E. Francis becomes a free-agent. | | SS F. Patek received a 1-year contract through automatic renewal worth a total of $300,000. | | RF W. Williams received a 1-year contract through automatic renewal worth a total of $300,000. | | SP F. Reberger received a 1-year contract through automatic renewal worth a total of $300,000. | | C A. Etchebarren received a 1-year contract through automatic renewal worth a total of $300,000. | | MR S. Mingori received a 1-year contract through automatic renewal worth a total of $750,000. | | 1B C. Cooper received a 1-year contract through automatic renewal worth a total of $2,000,000. | | CL B. Humphreys received a 1-year contract through automatic renewal worth a total of $620,000. | | LF B. Robinson received a 1-year contract through automatic renewal worth a total of $750,000. | | SP S. Kline received a 1-year contract through automatic renewal worth a total of $1,500,000. | | Released RF J. Alou. | | Released C J. Oates. |
| Friday, October 29th, 1971 | | SP J. Palmer received a 1-year contract through arbitration worth a total of $4,878,000. |
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