| | | Thursday, October 12th, 1972 | | 1B D. Stuart retires. |
| Friday, June 16th, 1972 | | Placed LF L. Piniella on the International League 7-day disabled list. | | Placed SS L. Blanks on the International League 7-day disabled list. | | Placed RF B. Buckner on the International League 7-day disabled list. | | Traded 28-year-old minor league catcher A. Etchebarren and a 4th round draft pick to the Brooklyn Superbas, getting 30-year-old third baseman T. Perez in return. | | Demoted 3B J. Kenney to Triple A Pittsburgh. |
| Wednesday, March 1st, 1972 | | Drafted SP R. Reuschel in the 1972 first-year player draft (Round 1, Pick 1, 1st overall Pick). | | Traded 23-year-old starting pitcher S. Kline to the Los Angeles Outlaws, getting $1 in cash in return. | | Drafted 2B J. Orta in the 1972 first-year player draft (Round 1, Pick 11, 11th overall Pick). | | Traded 22-year-old minor league starting pitcher B. Johnson, 27-year-old minor league right fielder W. Williams and 26-year-old minor league starting pitcher S. Renko to the Brooklyn Superbas, getting 26-year-old left fielder H. McRae, 23-year-old minor league starting pitcher C. Hough, 34-year-old first baseman W. McCovey and 34-year-old left fielder J. Hickman in return. | | Traded 26-year-old shortstop H. Torres to the St. Louis Maroons, getting 39-year-old minor league first baseman D. Stuart in return. | | Drafted MR M. Garman in the 1972 first-year player draft (Round 3, Pick 2, 26th overall Pick). | | Drafted SP J. Bibby in the 1972 first-year player draft (Round 3, Pick 6, 30th overall Pick). | | Drafted SS L. Blanks in the 1972 first-year player draft (Round 4, Pick 1, 37th overall Pick). | | Drafted SP S. Busby in the 1972 first-year player draft (Round 4, Pick 2, 38th overall Pick). | | Drafted C G. Borgmann in the 1972 first-year player draft (Round 4, Pick 7, 43rd overall Pick). |
| 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 SP M. Pattin. | | Released MR D. Frisella. | | Released RF J. Alou. | | Released C J. Oates. | | Released MR M. Queen. | | Released 2B C. Ruiz. | | Released SP B. Belinsky. | | Released 2B P. Popovich. |
| 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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