| | | Wednesday, September 17th, 1975 | | Signed RF Johnny Callison to a 2-year contract extension worth a total of $1,675,000. |
| Tuesday, September 16th, 1975 | | Placed SP Frank Reberger on the 15-day disabled list, retroactive to 09/14/1975. |
| Sunday, September 7th, 1975 | | Signed MR Dick Selma to a 4-year contract extension worth a total of $12,400,000. |
| Wednesday, July 16th, 1975 | | Transferred CL Wayne Twitchell to the 60-day DL. |
| Friday, November 1st, 1974 | | 2B D. Lopes received a 1-year contract through automatic renewal worth a total of $1,500,000. | | MR S. Foucault received a 1-year contract through automatic renewal worth a total of $1,000,000. | | C J. Moses received a 1-year contract through automatic renewal worth a total of $350,000. | | CL W. Twitchell received a 1-year contract through automatic renewal worth a total of $350,000. | | 1B T. Solaita received a 1-year contract through automatic renewal worth a total of $350,000. | | SP B. Blyleven received a 1-year contract through automatic renewal worth a total of $2,200,000. | | 3B R. Cey received a 1-year contract through automatic renewal worth a total of $750,000. | | LF E. Stroud received a 1-year contract through automatic renewal worth a total of $350,000. | | SP R. Waits received a 1-year contract through automatic renewal worth a total of $350,000. | | 2B F. White received a 1-year contract through automatic renewal worth a total of $500,000. | | CL A. Hrabosky received a 1-year contract through automatic renewal worth a total of $1,500,000. |
| Tuesday, October 29th, 1974 | | MR D. Selma received a 1-year contract through arbitration worth a total of $2,687,800. | | SP T. Seaver received a 1-year contract through arbitration worth a total of $2,805,400. | | CF B. Tolan received a 1-year contract through arbitration worth a total of $972,000. | | SP M. Lopez received a 1-year contract through arbitration worth a total of $2,278,000. | | SP F. Reberger received a 1-year contract through arbitration worth a total of $450,000. | | C M. Sanguillen received a 1-year contract through arbitration worth a total of $3,060,000. |
| Thursday, July 4th, 1974 | | Placed CL A. Hrabosky on the 15-day disabled list. | | Placed LF C. Hinton on the 15-day disabled list. | | Placed 1B F. Robinson on the active roster. | | Activated 1B F. Robinson from the disabled list. |
| Tuesday, March 5th, 1974 | | Signed 2B B. Allen to a 3-year contract extension worth a total of $4,850,000. |
| Monday, February 25th, 1974 | | Signed free agent LF P. Ward to a 2-year contract worth a total of $2,000,000. |
| Friday, February 22nd, 1974 | | Signed free agent C M. Sadek to a 1-year contract worth a total of $350,000. |
| Wednesday, February 20th, 1974 | | Traded 25-year-old minor league third baseman C. Robinson and a 4th round draft pick to the Manhattan Gray Sox, getting 28-year-old starting pitcher T. Seaver, a 2nd round draft pick and a 3rd round draft pick in return. |
| Friday, February 15th, 1974 | | Signed free agent CF B. Day to a 1-year contract worth a total of $350,000. |
| Wednesday, February 6th, 1974 | | Signed 1B O. Cepeda to a 2-year contract extension worth a total of $20,700,000. | | Signed free agent 1B F. Robinson to a 2-year contract worth a total of $15,500,000. | | Signed 3B R. Petrocelli to a 3-year contract extension worth a total of $21,300,000. | | Signed free agent RF R. Torres to a 2-year contract worth a total of $700,000. |
| Monday, November 5th, 1973 | | 2B D. Lopes received a 1-year contract through automatic renewal worth a total of $1,500,000. | | SP F. Reberger received a 1-year contract through automatic renewal worth a total of $300,000. | | SP R. Harrison received a 1-year contract through automatic renewal worth a total of $300,000. | | CL W. Twitchell received a 1-year contract through automatic renewal worth a total of $300,000. | | SP B. Blyleven received a 1-year contract through automatic renewal worth a total of $2,200,000. | | SP M. Lopez received a 1-year contract through automatic renewal worth a total of $310,000. | | 1B J. Hague received a 1-year contract through automatic renewal worth a total of $300,000. | | CL A. Hrabosky received a 1-year contract through automatic renewal worth a total of $1,500,000. |
| Friday, November 2nd, 1973 | | MR D. Selma received a 1-year contract through arbitration worth a total of $1,700,000. | | C M. Sanguillen received a 1-year contract through arbitration worth a total of $3,400,000. | | CF B. Tolan received a 1-year contract through arbitration worth a total of $1,080,000. | | 3B R. Petrocelli received a 1-year contract through arbitration worth a total of $6,000,000. | | SP B. Sadowski received a 1-year contract through arbitration worth a total of $450,000. |
| Saturday, October 20th, 1973 | | Signed C B. Rodgers to a 2-year contract extension worth a total of $1,500,000. |
| Monday, September 24th, 1973 | | Placed MR M. Kekich on the 60-day disabled list. | | Placed 2B B. Allen on the active roster. | | Activated 2B B. Allen from the disabled list. |
| Tuesday, September 18th, 1973 | | Signed RF C. Hinton to a 1-year contract extension worth a total of $750,000. |
| Friday, September 14th, 1973 | | Signed MR P. Richert to a 1-year contract extension worth a total of $500,000. |
| Friday, February 23rd, 1973 | | Signed free agent CF E. Stroud to a 2-year contract worth a total of $600,000. |
| Tuesday, February 20th, 1973 | | Traded 36-year-old second baseman D. Howser and 29-year-old starting pitcher C. Dobson to the St. Louis Maroons, getting 33-year-old second baseman B. Allen, a 2nd round draft pick and a 3rd round draft pick in return. | | Traded 21-year-old minor league reliever E. Sosa to the Brooklyn Superbas, getting 26-year-old second baseman D. Lopes in return. |
| Thursday, February 15th, 1973 | | Signed free agent SP B. Sadowski to a 1-year contract worth a total of $450,000. |
| Tuesday, February 13th, 1973 | | Signed free agent MR T. Clevenger to a 2-year contract worth a total of $4,000,000. |
| Tuesday, February 6th, 1973 | | Signed free agent C T. Haller to a 2-year contract worth a total of $2,000,000. |
| Sunday, November 5th, 1972 | | SS D. McAuliffe becomes a free-agent. | | SP J. Koosman received a 1-year contract through automatic renewal worth a total of $2,100,000. | | SP C. Dobson received a 1-year contract through automatic renewal worth a total of $500,000. | | MR D. Gross becomes a free-agent. | | C G. Mitterwald received a 1-year contract through automatic renewal worth a total of $500,000. | | CL W. Twitchell received a 1-year contract through automatic renewal worth a total of $300,000. | | C M. Sanguillen received a 1-year contract through automatic renewal worth a total of $500,000. | | 2B D. Campbell received a 1-year contract through automatic renewal worth a total of $300,000. | | SP B. Blyleven received a 1-year contract through automatic renewal worth a total of $2,200,000. | | MR R. Corbin received a 1-year contract through automatic renewal worth a total of $300,000. | | SP M. Lopez received a 1-year contract through automatic renewal worth a total of $310,000. | | 1B J. Hague received a 1-year contract through automatic renewal worth a total of $300,000. | | LF L. Lee received a 1-year contract through automatic renewal worth a total of $300,000. | | MR M. Kekich received a 1-year contract through automatic renewal worth a total of $300,000. | | RF A. Shamsky received a 1-year contract through automatic renewal worth a total of $300,000. | | CL A. Hrabosky received a 1-year contract through automatic renewal worth a total of $1,500,000. |
| Thursday, November 2nd, 1972 | | Released SP G. Nolan. | | Released 3B K. McMullen. | | Released LF T. Davis. | | SP M. Cuellar received a 1-year contract through arbitration worth a total of $1,710,000. | | MR D. Selma received a 1-year contract through arbitration worth a total of $900,000. | | CF B. Tolan received a 1-year contract through arbitration worth a total of $1,350,000. | | MR P. Richert received a 1-year contract through arbitration worth a total of $450,000. | | 2B J. Kindall received a 1-year contract through arbitration worth a total of $450,000. |
| Sunday, September 24th, 1972 | | Placed RF C. Hinton on the 15-day disabled list. | | Placed 2B D. Howser on the active roster. | | Activated 2B D. Howser from the disabled list. |
| Sunday, February 6th, 1972 | | Signed free agent C J. Romano to a 2-year contract worth a total of $4,000,000. |
| Saturday, February 5th, 1972 | | Signed free agent LF R. Colavito to a 3-year contract worth a total of $24,900,000. |
| Thursday, February 3rd, 1972 | | Signed free agent RF R. Clemente to a 2-year contract worth a total of $9,700,000. |
| Tuesday, January 11th, 1972 | | Traded a 1st round draft pick and a 4th round draft pick to the Brooklyn Superbas, getting 20-year-old reliever M. Wilcox, 28-year-old reliever D. Selma and 24-year-old minor league third baseman B. Sudakis in return. |
| Monday, November 1st, 1971 | | MR D. Coombs received a 1-year contract through automatic renewal worth a total of $1,500,000. | | SP J. Koosman received a 1-year contract through automatic renewal worth a total of $2,100,000. | | MR G. Waslewski received a 1-year contract through automatic renewal worth a total of $300,000. | | SP G. Nolan received a 1-year contract through automatic renewal worth a total of $2,300,000. | | C M. Sanguillen received a 1-year contract through automatic renewal worth a total of $500,000. | | RF B. Murcer received a 1-year contract through automatic renewal worth a total of $2,000,000. | | SP B. Blyleven received a 1-year contract through automatic renewal worth a total of $2,200,000. | | CF B. Tolan received a 1-year contract through automatic renewal worth a total of $1,500,000. | | CF M. Jones received a 1-year contract through automatic renewal worth a total of $300,000. | | SP M. Lopez received a 1-year contract through automatic renewal worth a total of $310,000. | | 1B J. Hague received a 1-year contract through automatic renewal worth a total of $300,000. | | LF A. Spangler becomes a free-agent. | | MR M. Kekich received a 1-year contract through automatic renewal worth a total of $300,000. | | RF L. Lee received a 1-year contract through automatic renewal worth a total of $300,000. | | MR R. Corbin received a 1-year contract through automatic renewal worth a total of $300,000. | | CL W. Twitchell received a 1-year contract through automatic renewal worth a total of $300,000. | | 1B L. Gabrielson received a 1-year contract through automatic renewal worth a total of $750,000. | | 2B D. Campbell received a 1-year contract through automatic renewal worth a total of $300,000. | | 2B G. Sutherland received a 1-year contract through automatic renewal worth a total of $300,000. | | CL A. Hrabosky received a 1-year contract through automatic renewal worth a total of $1,500,000. | | SP J. Rooker received a 1-year contract through automatic renewal worth a total of $300,000. | | LF I. Murrell received a 1-year contract through automatic renewal worth a total of $300,000. | | RF A. Shamsky received a 1-year contract through automatic renewal worth a total of $300,000. | | SP J. Hook received a 1-year contract through automatic renewal worth a total of $300,000. | | Released RF B. Murcer. |
| Friday, October 29th, 1971 | | SS D. McAuliffe received a 1-year contract through arbitration worth a total of $6,500,000. | | SP M. Cuellar received a 1-year contract through arbitration worth a total of $1,900,000. | | MR P. Richert received a 1-year contract through arbitration worth a total of $450,000. | | LF T. Davis received a 1-year contract through arbitration worth a total of $450,000. | | 3B S. Boros received a 1-year contract through arbitration worth a total of $450,000. | | 2B J. Kindall received a 1-year contract through arbitration worth a total of $450,000. | | 3B K. McMullen received a 1-year contract through arbitration worth a total of $950,000. |
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