Transactions| Date | Transaction | |||
| 5/31/04 | Activated RHP Antonio Osuna from the 15-day disabled list; optioned RHP Brian Sweeney to Triple-A Portland. | |||
| 5/29/04 | Brian Buchanan: Strained oblique, placed on 15-day DL. | |||
| 5/28/04 | Placed OF Ryan Klesko on the 15-day disabled list retroactive to May 27 with a strained oblique and purchased the contract of OF Jon Knott from Triple-A Portland. | |||
| 5/27/04 | Purchased the contract of RHP Brian Sweeney from Triple-A Portland; placed RHP Jake Peavy on the 15-day disabled list, retroactive to May 20, with a strained tendon in his right forearm. | |||
| 5/21/04 | Recalled RHP Dennis Tankersley from Portland and placed INF Ramon Vazquez on 15-day DL. | |||
| Activated RHP Rod Beck from extended Spring Training; sent LHP Eddie Oropesa outright to Triple-A Portland. | ||||
| 5/18/04 | Recalled RHP Justin Germano, placed LHP David Wells on 15-day DL. | |||
| 5/12/04 | Reinstated INF Rey Ordonez from restricted list and released. | |||
| Purchased the contract of RHP Brandon Puffer from Triple-A Portland; placed RHP Antonio Osuna on the 15-day disabled list with a strained right groin. | ||||
| 5/11/04 | Activated IF Jeff Cirillo from the DL; returned RHP Jason Szuminski to the Chicago Cubs. | |||
| 5/10/04 | Released nonroster OF Gene Kingsale from Triple-A Portland. | |||
