Transactions| Date | Transaction | |||
| 5/30/03 | Activated LHP Stephen Randolph from the 15-day DL | |||
| 5/29/03 | Traded RHP Byung-Hyun Kim to the Boston Red Sox for 3B Shea Hillenbrand | |||
| 5/28/03 | Placed RHP Brandon Webb on 15-day DL (retroactive to May 24) with tendinitis in his right elbow | |||
| Recalled RHP John Patterson from Triple-A Tucson | ||||
| 5/26/03 | Optioned RHP Andrew Good to Triple-A Tucson | |||
| Activated RHP Byung-Hyun Kim from the 15-day DL | ||||
| 5/18/03 | Moved INF Craig Counsell from the 15-day DL to the 60-day DL | |||
| Optioned LHP Chris Capuano to Triple-A Tucson and purchased the contract of LHP Eddie Oropesa from Tucson | ||||
| 5/7/03 | Recalled INF Alex Cintron from Triple-A Tucson | |||
| Placed INF Craig Counsell on the 15-day DL with a dislocated right thumb | ||||
| 5/4/03 | Called up LHP Chris Capuano from Triple-A Tucson | |||
| Placed LHP Stephen Randolph on the 15-day DL with a strained oblique muscle | ||||
| 5/3/03 | Called up RHP Scott Service from Triple-A Tucson | |||
| Placed RHP Byung-Hyun Kim on 15-day DL (retroactive to April 30) | ||||
| Optioned C Robby Hammock to Triple-A Tucson | ||||
| Activated RHP Curt Schilling off 15-day DL | ||||
| 5/2/03 | Recalled RHP Brandon Webb from Triple-A Tucson | |||
| Placed LHP Randy Johnson on the 15-day DL following knee surgery | ||||