Transactions| Date | Transaction | |||
| 5/30/03 | Purchased the contract of RHP Brian Tollberg and outrighted infielder/outfielder Jermaine Clark | |||
| 5/26/03 | Placed outfielder Jason Bay on the 15-day DL with a fractured right wrist | |||
| 5/23/03 | Reinstated catcher Gary Bennett from the 15-day DL and optioned catcher Michael Rivera to Portland | |||
| Placed outfielder Mark Kotsay on the 15-day DL and recalled outfielder Jason Bay from Triple-A Portland | ||||
| Claimed outfielder Gary Matthews Jr. off waivers and designated outfielder Shane Victorino for assignment | ||||
| 5/20/03 | Activated RHP Adam Eaton off the 15-day DL. | |||
| 5/18/03 | Catcher Wiki Gonzalez was optioned to Triple-A Portland, and the Padres purchased the contract of Catcher Miguel Ojeda from Triple-A Portland. | |||
| 5/9/03 | Placed right-handed pitcher Adam Eaton on the 15-day disabled list (retroactive to May 5) with a strained right groin and purchased the contract of left-handed pitcher Roger Deago from Double-A Mobile. Transferred outfielder Phil Nevin from the 15- to the 60-day disabled list. | |||
| 5/1/03 | Oliver Perez: Optioned LHP Oliver Perez to Triple-A Portland. Recalled LHP Mike Bynum. | |||