| | | Friday, September 26th, 1975 | | Placed SP Phil Niekro on the 15-day disabled list, retroactive to 09/24/1975. |
| Tuesday, September 23rd, 1975 | | Placed CF Jimmy Wynn on the 15-day disabled list, retroactive to 09/21/1975. | | Purchased the contract of LF Jerry Martin from Triple A San Diego. |
| Thursday, September 18th, 1975 | | Signed SP Phil Niekro to a 3-year contract extension worth a total of $16,130,000. |
| Saturday, September 13th, 1975 | | Signed 3B Sal Bando to a 5-year contract extension worth a total of $36,500,000. |
| Sunday, June 1st, 1975 | | Placed RF Ken Henderson on the 60-day disabled list. |
| Tuesday, May 20th, 1975 | | Signed SP Fritz Peterson to a 5-year contract extension worth a total of $48,000,000. |
| Tuesday, February 25th, 1975 | | Traded 23-year-old starting pitcher Glenn Abbott to the Manhattan Gray Sox, getting a 1st round draft pick and a 4th round draft pick in return. |
| Sunday, February 9th, 1975 | | Signed free agent 3B Tony Perez to a 1-year contract worth a total of $1,000,000. |
| Friday, November 1st, 1974 | | LF D. Winfield received a 1-year contract through automatic renewal worth a total of $2,100,000. | | MR P. Borbon received a 1-year contract through automatic renewal worth a total of $2,000,000. | | CL B. Apodaca received a 1-year contract through automatic renewal worth a total of $1,500,000. | | SP B. Strom received a 1-year contract through automatic renewal worth a total of $350,000. | | C D. Roberts received a 1-year contract through automatic renewal worth a total of $500,000. | | SP D. Roberts received a 1-year contract through automatic renewal worth a total of $350,000. | | SS C. Speier received a 1-year contract through automatic renewal worth a total of $1,000,000. | | LF K. Singleton received a 1-year contract through automatic renewal worth a total of $500,000. | | CF G. Thomasson received a 1-year contract through automatic renewal worth a total of $750,000. | | SP M. Caldwell received a 1-year contract through automatic renewal worth a total of $1,500,000. | | 2B T. Fuentes received a 1-year contract through automatic renewal worth a total of $350,000. | | SP S. Busby received a 1-year contract through automatic renewal worth a total of $350,000. | | MR G. Abbott received a 1-year contract through automatic renewal worth a total of $350,000. | | 2B T. Sizemore received a 1-year contract through automatic renewal worth a total of $350,000. | | C E. Rodriguez received a 1-year contract through automatic renewal worth a total of $350,000. | | RF K. Henderson received a 1-year contract through automatic renewal worth a total of $500,000. |
| Tuesday, October 29th, 1974 | | SP F. Peterson received a 1-year contract through arbitration worth a total of $5,759,100. | | MR T. Burgmeier received a 1-year contract through arbitration worth a total of $1,100,000. | | SP P. Niekro received a 1-year contract through arbitration worth a total of $4,861,800. | | 1B M. Epstein received a 1-year contract through arbitration worth a total of $5,850,000. |
| Friday, June 21st, 1974 | | Signed SP L. Dierker to a 2-year contract extension worth a total of $13,000,000. |
| Saturday, June 1st, 1974 | | Placed SP B. Strom on the 15-day disabled list. | | Purchased the contract of MR G. Abbott from Triple A San Diego. |
| Friday, February 15th, 1974 | | Signed free agent SS R. Hansen to a 1-year contract worth a total of $500,000. |
| Sunday, February 10th, 1974 | | Placed SP P. Niekro on the active roster. | | Activated SP P. Niekro from the disabled list. | | Placed SP D. Rau on the active roster. | | Activated SP D. Rau from the 60-day disabled list. |
| Wednesday, February 6th, 1974 | | Signed free agent 2B C. Schilling to a 1-year contract worth a total of $840,000. |
| Tuesday, February 5th, 1974 | | Signed free agent 3B P. Schaal to a 1-year contract worth a total of $350,000. |
| Friday, February 1st, 1974 | | Traded 22-year-old minor league third baseman D. DeCinces to the Denver 14ers, getting a 2nd round draft pick in return. |
| Monday, November 5th, 1973 | | SP J. Hardin received a 1-year contract through automatic renewal worth a total of $400,000. | | MR P. Borbon received a 1-year contract through automatic renewal worth a total of $2,000,000. | | CL B. Apodaca received a 1-year contract through automatic renewal worth a total of $1,500,000. | | SP B. Strom received a 1-year contract through automatic renewal worth a total of $300,000. | | C D. Roberts received a 1-year contract through automatic renewal worth a total of $500,000. | | SP D. Roberts received a 1-year contract through automatic renewal worth a total of $300,000. | | SS C. Speier received a 1-year contract through automatic renewal worth a total of $1,000,000. | | LF K. Singleton received a 1-year contract through automatic renewal worth a total of $500,000. | | CF G. Thomasson received a 1-year contract through automatic renewal worth a total of $750,000. | | SP M. Caldwell received a 1-year contract through automatic renewal worth a total of $1,500,000. | | LF D. Winfield received a 1-year contract through automatic renewal worth a total of $2,100,000. | | SP D. Rau received a 1-year contract through automatic renewal worth a total of $1,000,000. | | SP S. Busby received a 1-year contract through automatic renewal worth a total of $300,000. | | 2B T. Sizemore received a 1-year contract through automatic renewal worth a total of $300,000. | | C E. Rodriguez received a 1-year contract through automatic renewal worth a total of $300,000. | | 2B D. Howser becomes a free-agent. | | RF K. Henderson received a 1-year contract through automatic renewal worth a total of $500,000. |
| Friday, November 2nd, 1973 | | SP F. Peterson received a 1-year contract through arbitration worth a total of $5,487,200. | | MR J. Hiller becomes a free-agent. | | MR T. Burgmeier received a 1-year contract through arbitration worth a total of $1,200,000. | | SP P. Niekro received a 1-year contract through arbitration worth a total of $4,599,000. | | SP L. Dierker received a 1-year contract through arbitration worth a total of $6,500,000. | | 1B M. Epstein received a 1-year contract through arbitration worth a total of $6,500,000. |
| Monday, September 24th, 1973 | | Placed SP P. Niekro on the 15-day disabled list. | | Placed SP D. Rau on the 60-day disabled list. | | Purchased the contract of SP S. Busby from Triple A San Diego. |
| Sunday, July 1st, 1973 | | Demoted MR D. Gross to Triple A San Diego. | | Placed SP D. Rau on the active roster. | | Activated SP D. Rau from the disabled list. |
| Friday, June 1st, 1973 | | Placed SP D. Rau on the 15-day disabled list. | | Purchased the contract of SP J. Gibbon from Triple A San Diego. |
| Tuesday, May 1st, 1973 | | Placed MR P. Borbon on the 15-day disabled list. | | Purchased the contract of SP D. Rau from Triple A San Diego. |
| Sunday, February 25th, 1973 | | Signed free agent 2B B. Consolo to a 1-year contract worth a total of $660,000. | | Signed free agent CF C. Flood to a 1-year contract worth a total of $5,870,000. |
| Saturday, February 24th, 1973 | | Signed free agent 3B K. McMullen to a 1-year contract worth a total of $1,000,000. |
| Tuesday, February 20th, 1973 | | Traded 37-year-old third baseman D. Demeter and 31-year-old shortstop R. Hunt to the Cleveland Barons, getting 22-year-old minor league starting pitcher S. Busby, a 1st round draft pick and a 1st round draft pick in return. |
| Thursday, February 15th, 1973 | | Signed free agent MR D. Gross to a 1-year contract worth a total of $460,000. | | Signed free agent RF T. Oliva to a 2-year contract worth a total of $600,000. | | Signed free agent MR M. Paul to a 1-year contract worth a total of $430,000. |
| Sunday, November 5th, 1972 | | SP J. Hardin received a 1-year contract through automatic renewal worth a total of $400,000. | | MR P. Borbon received a 1-year contract through automatic renewal worth a total of $2,000,000. | | SP B. Strom received a 1-year contract through automatic renewal worth a total of $300,000. | | C D. Roberts received a 1-year contract through automatic renewal worth a total of $500,000. | | SP J. Hiller received a 1-year contract through automatic renewal worth a total of $310,000. | | LF K. Singleton received a 1-year contract through automatic renewal worth a total of $500,000. | | LF B. Cowan received a 1-year contract through automatic renewal worth a total of $301,000. | | CL R. Crone becomes a free-agent. | | C D. Porter received a 1-year contract through automatic renewal worth a total of $2,000,000. | | LF F. Robinson becomes a free-agent. | | 2B T. Sizemore received a 1-year contract through automatic renewal worth a total of $300,000. | | SP S. Kline received a 1-year contract through automatic renewal worth a total of $1,500,000. | | 2B T. Fuentes received a 1-year contract through automatic renewal worth a total of $300,000. | | 1B M. Epstein received a 1-year contract through automatic renewal worth a total of $2,000,000. | | CF K. Henderson received a 1-year contract through automatic renewal worth a total of $500,000. |
| Thursday, November 2nd, 1972 | | Released CF J. Wynn. | | SP F. Peterson received a 1-year contract through arbitration worth a total of $4,951,800. | | MR T. Burgmeier received a 1-year contract through arbitration worth a total of $754,400. | | SP L. Dierker received a 1-year contract through arbitration worth a total of $5,434,000. |
| Sunday, September 24th, 1972 | | Placed C J. Romano on the 15-day disabled list. | | Placed SS C. Smith on the 15-day disabled list. | | Purchased the contract of C D. Roberts from Triple A San Diego. |
| Wednesday, August 16th, 1972 | | Placed SP J. Gibbon on the 15-day disabled list. | | Purchased the contract of SP B. Strom from Triple A San Diego. |
| Sunday, April 16th, 1972 | | Traded a 3rd round draft pick and a 5th round draft pick to the Brooklyn Superbas, getting 26-year-old second baseman T. Sizemore and a 4th round draft pick in return. | | Placed 3B B. Grabarkewitz on the 15-day disabled list. |
| Wednesday, March 1st, 1972 | | Traded $1 in cash to the Cleveland Barons, getting 23-year-old starting pitcher S. Kline in return. |
| Saturday, February 12th, 1972 | | Signed free agent MR D. Gross to a 1-year contract worth a total of $4,300,000. | | Signed free agent LF F. Robinson to a 1-year contract worth a total of $2,210,000. |
| Monday, February 7th, 1972 | | Traded 30-year-old catcher T. McCarver and a 4th round draft pick to the St. Louis Maroons, getting 25-year-old catcher G. Mitterwald, 33-year-old minor league left fielder B. Cowan and a 3rd round draft pick in return. |
| Sunday, February 6th, 1972 | | Signed free agent SP J. Hardin to a 1-year contract worth a total of $400,000. | | Signed free agent MR D. Womack to a 2-year contract worth a total of $2,600,000. |
| Monday, November 1st, 1971 | | 2B T. Fuentes received a 1-year contract through automatic renewal worth a total of $300,000. | | RF W. Kirkland becomes a free-agent. | | LF F. Robinson becomes a free-agent. | | CL K. Tatum received a 1-year contract through automatic renewal worth a total of $1,500,000. | | SP C. Morton received a 1-year contract through automatic renewal worth a total of $300,000. | | LF K. Singleton received a 1-year contract through automatic renewal worth a total of $500,000. | | 3B B. Grabarkewitz received a 1-year contract through automatic renewal worth a total of $2,000,000. | | C D. Porter received a 1-year contract through automatic renewal worth a total of $2,000,000. | | SS J. Hernandez received a 1-year contract through automatic renewal worth a total of $300,000. | | MR T. Burgmeier received a 1-year contract through automatic renewal worth a total of $500,000. | | SS L. Cardenas received a 1-year contract through automatic renewal worth a total of $330,000. | | 3B B. Melton received a 1-year contract through automatic renewal worth a total of $1,000,000. | | SP C. Dobson received a 1-year contract through automatic renewal worth a total of $500,000. | | RF L. Wagner becomes a free-agent. | | CL J. Hiller received a 1-year contract through automatic renewal worth a total of $310,000. | | 1B M. Epstein received a 1-year contract through automatic renewal worth a total of $2,000,000. | | CF K. Henderson received a 1-year contract through automatic renewal worth a total of $500,000. | | Traded 30-year-old shortstop R. Hunt, a 1st round draft pick and a 2nd round draft pick to the Manhattan Gray Sox, getting a 1st round draft pick and a 2nd round draft pick in return. |
| Friday, October 29th, 1971 | | SS R. Hunt received a 1-year contract through arbitration worth a total of $6,000,000. | | SP F. Peterson received a 1-year contract through arbitration worth a total of $3,962,000. | | C T. McCarver received a 1-year contract through arbitration worth a total of $1,215,000. | | CF J. Wynn received a 1-year contract through arbitration worth a total of $1,422,900. | | SP L. Dierker received a 1-year contract through arbitration worth a total of $4,891,000. |
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