| | | Tuesday, September 16th, 1975 | | Placed 2B Billy Grabarkewitz on the 15-day disabled list, retroactive to 09/14/1975. |
| Tuesday, September 9th, 1975 | | Placed SP Ron Guidry on the active roster. | | Activated SP Ron Guidry from the disabled list. |
| Friday, August 1st, 1975 | | Traded 30-year-old minor league right fielder Walt Williams to the Los Angeles Outlaws, getting 28-year-old minor league catcher Ellie Rodriguez in return. | | Traded 36-year-old second baseman Bernie Allen and 26-year-old reliever Bill Laxton to the Washington Monuments, getting 27-year-old reliever Bill Butler in return. | | Traded 31-year-old right fielder Ollie Brown, 22-year-old third baseman Buddy Bell, a 2nd round draft pick and a 2nd round draft pick to the Manhattan Gray Sox, getting 29-year-old second baseman Billy Grabarkewitz, 22-year-old minor league right fielder Dwight Evans and a 4th round draft pick in return. | | Traded 30-year-old starting pitcher Bill Singer, 27-year-old closer Gene Garber, 26-year-old minor league starting pitcher Tom Hall and 22-year-old minor league right fielder Dan Ford to the Montréal Voyageurs, getting 23-year-old minor league starting pitcher Ron Guidry, 31-year-old starting pitcher Luke Walker, 25-year-old left fielder Ben Oglivie, 30-year-old minor league starting pitcher Jim Ray and a 3rd round draft pick in return. |
| Wednesday, July 16th, 1975 | | Placed LF Johnny Grubb on the International League 7-day disabled list, retroactive to 07/06/1975. |
| Monday, June 16th, 1975 | | Demoted 1B Chico Salmon to Triple A Kansas City. | | Placed 3B Bill Melton on the active roster. | | Activated 3B Bill Melton from the disabled list. | | Placed CF Ted Uhlaender on the International League 7-day disabled list, retroactive to 06/05/1975. | | Placed RF Walt Williams on the International League 7-day disabled list, retroactive to 06/11/1975. |
| Saturday, March 1st, 1975 | | Traded 27-year-old reliever Rich Folkers and 21-year-old minor league center fielder Jerry White to the Boston Federals, getting 35-year-old second baseman Bernie Allen in return. | | Traded 28-year-old third baseman Al Gallagher to the Denver 14ers, getting $1 in cash in return. | | Drafted 3B Paul Dade in the 1975 first-year player draft (Round 3, Pick 1, 29th overall pick). | | Drafted MR Ed Glynn in the 1975 first-year player draft (Round 3, Pick 6, 34th overall pick). | | Drafted RF Dan Ford in the 1975 first-year player draft (Round 3, Pick 7, 35th overall pick). | | Drafted LF Mike Vail in the 1975 first-year player draft (Round 5, Pick 10, 66th overall pick). | | Released LF Mike Vail. |
| Wednesday, February 19th, 1975 | | Signed free agent SP Juan Pizarro to a 1-year contract worth a total of $1,100,000. | | Signed free agent SP Mickey Lolich to a 1-year contract worth a total of $670,000. |
| Saturday, February 15th, 1975 | | Signed SP Bill Singer to a 4-year contract extension worth a total of $26,000,000. | | Signed C Carl Taylor to a 4-year contract extension worth a total of $20,000,000. |
| Sunday, February 9th, 1975 | | Signed free agent RF Ollie Brown to a 2-year contract worth a total of $8,484,000. | | Signed free agent 1B Willie Montanez to a 3-year contract worth a total of $8,694,000. |
| Friday, January 10th, 1975 | | Released 3B Doug Rader. |
| Friday, November 1st, 1974 | | LF S. Braun received a 1-year contract through automatic renewal worth a total of $500,000. | | C B. Stinson received a 1-year contract through automatic renewal worth a total of $350,000. | | SP B. Parsons received a 1-year contract through automatic renewal worth a total of $500,000. | | SP J. Janeski received a 1-year contract through automatic renewal worth a total of $500,000. | | MR G. Garber received a 1-year contract through automatic renewal worth a total of $750,000. | | 2B T. Harrah received a 1-year contract through automatic renewal worth a total of $1,500,000. | | 3B A. Gallagher received a 1-year contract through automatic renewal worth a total of $350,000. | | MR M. Kilkenny received a 1-year contract through automatic renewal worth a total of $828,000. | | CF T. Uhlaender received a 1-year contract through automatic renewal worth a total of $1,000,000. | | SP J. Decker received a 1-year contract through automatic renewal worth a total of $350,000. | | CF J. White received a 1-year contract through automatic renewal worth a total of $350,000. |
| Tuesday, October 29th, 1974 | | MR H. Parker received a 1-year contract through arbitration worth a total of $3,380,300. | | 2B J. Foy received a 1-year contract through arbitration worth a total of $630,000. | | SP B. Singer received a 1-year contract through arbitration worth a total of $5,181,000. | | SP W. Wood received a 1-year contract through arbitration worth a total of $5,000,000. | | C C. Taylor received a 1-year contract through arbitration worth a total of $3,997,000. | | 1B C. May received a 1-year contract through arbitration worth a total of $1,800,000. | | SP D. Boswell received a 1-year contract through arbitration worth a total of $3,800,000. | | CF A. Otis received a 1-year contract through arbitration worth a total of $4,389,000. | | RF M. Rettenmund received a 1-year contract through arbitration worth a total of $3,906,000. |
| Wednesday, February 20th, 1974 | | Traded 23-year-old minor league first baseman A. Thornton, 30-year-old reliever B. Johnson, a 3rd round draft pick and a 2nd round draft pick to the Montréal Voyageurs, getting a 1st round draft pick and a 3rd round draft pick in return. |
| Wednesday, February 6th, 1974 | | Signed free agent MR M. Kilkenny to a 1-year contract worth a total of $828,000. | | Signed free agent C L. Cox to a 1-year contract worth a total of $384,000. |
| Sunday, February 3rd, 1974 | | Signed free agent 3B R. McKinney to a 1-year contract worth a total of $520,000. |
| Monday, November 5th, 1973 | | MR H. Parker received a 1-year contract through automatic renewal worth a total of $300,000. | | LF S. Braun received a 1-year contract through automatic renewal worth a total of $500,000. | | MR R. Folkers received a 1-year contract through automatic renewal worth a total of $300,000. | | 3B F. Mantilla becomes a free-agent. | | C B. Stinson received a 1-year contract through automatic renewal worth a total of $300,000. | | 3B B. Bell received a 1-year contract through automatic renewal worth a total of $1,500,000. | | MR B. Laxton received a 1-year contract through automatic renewal worth a total of $300,000. | | SP B. Parsons received a 1-year contract through automatic renewal worth a total of $500,000. | | SP J. Janeski received a 1-year contract through automatic renewal worth a total of $500,000. | | MR B. Johnson received a 1-year contract through automatic renewal worth a total of $1,000,000. | | CF A. Otis received a 1-year contract through automatic renewal worth a total of $2,400,000. | | MR G. Garber received a 1-year contract through automatic renewal worth a total of $750,000. | | 2B T. Harrah received a 1-year contract through automatic renewal worth a total of $1,500,000. | | 3B A. Gallagher received a 1-year contract through automatic renewal worth a total of $300,000. | | RF M. Rettenmund received a 1-year contract through automatic renewal worth a total of $500,000. |
| Saturday, November 3rd, 1973 | | Traded a 1st round draft pick and a 5th round draft pick to the Brooklyn Superbas, getting 24-year-old left fielder S. Braun and a 3rd round draft pick in return. |
| Friday, November 2nd, 1973 | | 2B J. Foy received a 1-year contract through arbitration worth a total of $700,000. | | SP B. Singer received a 1-year contract through arbitration worth a total of $5,175,800. | | SP W. Wood received a 1-year contract through arbitration worth a total of $5,500,000. | | LF P. Ward becomes a free-agent. | | RF R. Staub received a 1-year contract through arbitration worth a total of $600,000. | | SP D. Boswell received a 1-year contract through arbitration worth a total of $4,200,000. | | SP S. Bahnsen received a 1-year contract through arbitration worth a total of $5,500,000. |
| Friday, October 19th, 1973 | | Signed RF R. Maris to a 2-year contract extension worth a total of $23,300,000. |
| Wednesday, October 17th, 1973 | | Placed 3B F. Mantilla on the active roster. | | Placed LF P. Ward on the active roster. |
| Monday, September 24th, 1973 | | Placed SS B. Mazeroski on the active roster. | | Activated SS B. Mazeroski from the disabled list. | | Placed MR R. Folkers on the active roster. | | Activated MR R. Folkers from the 60-day disabled list. | | Placed MR R. Folkers on the 60-day disabled list. |
| Monday, July 16th, 1973 | | Placed LF H. Aaron on the 15-day disabled list. | | Placed MR R. Folkers on the active roster. | | Activated MR R. Folkers from the 60-day disabled list. | | Placed MR R. Folkers on the 60-day disabled list. | | Placed 2B K. Boswell on the International League 7-day disabled list. | | Purchased the contract of SP J. Janeski from Triple A Kansas City. |
| Sunday, July 1st, 1973 | | Placed RF R. Maris on the active roster. | | Activated RF R. Maris from the disabled list. |
| Saturday, June 16th, 1973 | | Placed RF R. Maris on the active roster. | | Activated RF R. Maris from the disabled list. | | Placed RF R. Maris on the 15-day disabled list. |
| Friday, June 1st, 1973 | | Placed RF R. Maris on the 15-day disabled list. | | Placed 2B K. Boswell on the International League 7-day disabled list. | | Placed SP A. Downing on the International League 7-day disabled list. | | Placed 1B C. Salmon on the International League 7-day disabled list. | | Demoted SS P. Frias to Triple A Kansas City. |
| Monday, April 16th, 1973 | | Placed RF R. Maris on the 15-day disabled list. | | Placed CF T. Uhlaender on the International League 7-day disabled list. | | Placed CF B. Sharp on the International League 7-day disabled list. | | Placed SP A. Downing on the International League 7-day disabled list. |
| Thursday, March 1st, 1973 | | Drafted 1B A. Thornton in the 1973 first-year player draft (Round 1, Pick 12, 12th overall Pick). | | Drafted 2B P. Garcia in the 1973 first-year player draft (Round 5, Pick 12, 60th overall Pick). | | Drafted 2B P. Garcia in the 1973 first-year player draft (Round 5, Pick 12, 60th overall Pick). |
| Tuesday, February 6th, 1973 | | Signed free agent LF J. Grubb to a 2-year contract worth a total of $1,392,000. |
| Sunday, November 5th, 1972 | | MR H. Parker received a 1-year contract through automatic renewal worth a total of $300,000. | | 2B J. Foy received a 1-year contract through automatic renewal worth a total of $480,000. | | MR R. Folkers received a 1-year contract through automatic renewal worth a total of $300,000. | | C C. Taylor received a 1-year contract through automatic renewal worth a total of $2,000,000. | | MR D. Knowles received a 1-year contract through automatic renewal worth a total of $495,000. | | C D. Dietz received a 1-year contract through automatic renewal worth a total of $1,000,000. | | 1B C. May received a 1-year contract through automatic renewal worth a total of $2,000,000. | | SP D. Boswell received a 1-year contract through automatic renewal worth a total of $300,000. | | SP B. Parsons received a 1-year contract through automatic renewal worth a total of $500,000. | | 3B B. Bell received a 1-year contract through automatic renewal worth a total of $1,500,000. | | MR B. Johnson received a 1-year contract through automatic renewal worth a total of $1,000,000. | | SP S. Bahnsen received a 1-year contract through automatic renewal worth a total of $2,000,000. | | CF A. Otis received a 1-year contract through automatic renewal worth a total of $2,400,000. | | MR G. Garber received a 1-year contract through automatic renewal worth a total of $750,000. | | 2B T. Harrah received a 1-year contract through automatic renewal worth a total of $1,500,000. | | RF M. Rettenmund received a 1-year contract through automatic renewal worth a total of $500,000. |
| Thursday, November 2nd, 1972 | | Released RF T. Oliva. | | Released SS S. Jackson. | | Released MR R. Perranoski. | | Released SP C. Estrada. | | SP B. Singer received a 1-year contract through arbitration worth a total of $4,962,000. | | SP W. Wood received a 1-year contract through arbitration worth a total of $4,557,000. | | LF P. Ward received a 1-year contract through arbitration worth a total of $2,129,400. | | RF R. Staub received a 1-year contract through arbitration worth a total of $554,400. | | RF M. Jimenez received a 1-year contract through arbitration worth a total of $450,000. |
| Thursday, October 12th, 1972 | | LF P. Ward voids his last optional contract year. |
| Saturday, July 1st, 1972 | | Placed MR H. Parker on the 60-day disabled list. | | Placed SS S. Jackson on the International League 7-day disabled list. | | Placed C B. Stinson on the International League 7-day disabled list. | | Purchased the contract of MR G. Garber from Triple A Kansas City. |
| Saturday, June 17th, 1972 | | Signed SS B. Mazeroski to a 2-year contract extension worth a total of $1,780,000. |
| Friday, June 16th, 1972 | | Placed 2B K. Boswell on the International League 7-day disabled list. | | Placed C B. Stinson on the International League 7-day disabled list. |
| Thursday, June 1st, 1972 | | Placed 2B K. Boswell on the International League 7-day disabled list. |
| Monday, May 1st, 1972 | | Placed C B. Stinson on the International League 7-day disabled list. | | Placed LF M. Mota on the International League 7-day disabled list. |
| Sunday, April 16th, 1972 | | Placed C B. Stinson on the International League 7-day disabled list. |
| Wednesday, March 1st, 1972 | | Demoted MR K. Sanders to Triple A Kansas City. | | Demoted 3B D. Rader to Triple A Kansas City. | | Designated 3B T. Perez for assignment. | | Drafted 3B B. Bell in the 1972 first-year player draft (Round 2, Pick 6, 18th overall Pick). | | Drafted MR G. Garber in the 1972 first-year player draft (Round 3, Pick 4, 28th overall Pick). | | Drafted C B. Stinson in the 1972 first-year player draft (Round 5, Pick 6, 54th overall Pick). |
| Saturday, February 19th, 1972 | | Signed free agent 3B D. Rader to a 1-year contract worth a total of $300,000. |
| Thursday, February 17th, 1972 | | Signed free agent MR K. Sanders to a 1-year contract worth a total of $330,000. |
| Saturday, February 12th, 1972 | | Signed free agent SS C. Boyer to a 1-year contract worth a total of $840,000. |
| Wednesday, February 9th, 1972 | | Signed free agent 1B K. Boswell to a 1-year contract worth a total of $310,000. | | Signed free agent C T. Simmons to a 1-year contract worth a total of $360,000. |
| Sunday, February 6th, 1972 | | Signed free agent RF H. Aaron to a 3-year contract worth a total of $30,200,000. | | Signed free agent MR D. Giusti to a 3-year contract worth a total of $1,740,000. |
| Thursday, February 3rd, 1972 | | Signed free agent 3B J. Foy to a 1-year contract worth a total of $480,000. |
| Monday, November 1st, 1971 | | MR H. Parker received a 1-year contract through automatic renewal worth a total of $300,000. | | LF S. Braun received a 1-year contract through automatic renewal worth a total of $500,000. | | C M. May received a 1-year contract through automatic renewal worth a total of $300,000. | | MR R. Folkers received a 1-year contract through automatic renewal worth a total of $300,000. | | C C. Taylor received a 1-year contract through automatic renewal worth a total of $2,000,000. | | MR D. Knowles received a 1-year contract through automatic renewal worth a total of $495,000. | | 1B C. May received a 1-year contract through automatic renewal worth a total of $2,000,000. | | SP D. Boswell received a 1-year contract through automatic renewal worth a total of $300,000. | | SP B. Parsons received a 1-year contract through automatic renewal worth a total of $500,000. | | CL B. Johnson received a 1-year contract through automatic renewal worth a total of $1,000,000. | | SP S. Bahnsen received a 1-year contract through automatic renewal worth a total of $2,000,000. | | CF A. Otis received a 1-year contract through automatic renewal worth a total of $2,400,000. | | 3B T. Harrah received a 1-year contract through automatic renewal worth a total of $1,500,000. | | CF T. Uhlaender received a 1-year contract through automatic renewal worth a total of $1,000,000. | | 1B C. Salmon received a 1-year contract through automatic renewal worth a total of $300,000. | | SP J. Janeski received a 1-year contract through automatic renewal worth a total of $500,000. | | MR R. Perranoski received a 1-year contract through automatic renewal worth a total of $500,000. | | RF M. Rettenmund received a 1-year contract through automatic renewal worth a total of $500,000. | | Released RF R. Clemente. |
| Friday, October 29th, 1971 | | SP B. Singer received a 1-year contract through arbitration worth a total of $4,434,600. | | SP W. Wood received a 1-year contract through arbitration worth a total of $4,400,400. | | RF R. Staub received a 1-year contract through arbitration worth a total of $616,000. | | 3B T. Perez received a 1-year contract through arbitration worth a total of $4,600,000. |
| Friday, October 8th, 1971 | | SS J. Pagan retires. |
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