Transactions| Date | Transaction | |||
| 4/30/03 | Released RHP Scott MacRae from his minor league contract. | |||
| 4/22/03 | Reds outright RHP Chris Booker to Single-A Dayton. | |||
| 4/19/03 | Designated RHP Josias Manzanillo and LHP Jimmy Anderson for assignment; optioned IF Brandon Larson to Triple-A Louisville; recalled RHP Chris Reitsma and RHP Jeff Austin from Louisville; purchased the contracts of RHP Brian Reith and IF Ryan Freel from Louisville. | |||
| 4/17/03 | Reds place RHP Jimmy Haynes on the 15-day DL with a bulging disk and back stiffness. | |||
| 4/14/03 | Reds place IF Barry Larkin on 15-day DL with strained left calf. Team reinstates IF Juan Castro from the 15-day DL after knee surgery. | |||
| 4/11/03 | Joey Hamilton: The Reds today signed RHP Joey Hamilton to a minor league contract. He will report to Class AAA Louisville. | |||
| 4/8/03 | Jose Guillen: Purchased the contract of outfielder Jose Guillen from AAA Louisville. | |||
| 4/7/03 | Placed OF Ken Griffey Jr. on the 15-day disabled list, retroactive to April 6, with a dislocated right shoulder | |||