- Arizona Diamondbacks
- Signed 1B Tony Clark to a two-year contract extension.
- Chicago Cubs
- Activated SS Nomar Garciaparra from the 60-day disabled list; Activated RHP Scott Williamson from the 60-day disabled list; Placed Jerry Hairston on the 15-day disabled list (torn ligament left elbow); Optioned RHP Sergio Mitre to Triple-A Iowa and designated LHP Mike Remlinger for assignment.
- Cleveland Indians
- Placed LHP Arthur Rhodes on the bereavement list and recalled RHP Fernando Cabrera from Triple-A Buffalo.
- Colorado Rockies
- Claimed RHP Sunny Kim off waivers from the Nationals.
- Kansas City Royals
- Released C Alberto Castillo and purchased the contract of C Paul Phillips from Triple-A Omaha.
- New York Mets
- Recalled RHP Jae Seo from Triple-A Norfolk and optioned LHP Kazuhisa Ishii to Norfolk.
- Philadelphia Phillies
- Recalled LHP Eude Brito from Triple-A Scranton/Wilkes-Barre and optioned INF Matt Kata to Triple-A.
- Seattle Mariners
- Activated RHP Jeff Nelson from the bereavement list and optioned RHP Masao Kida to Triple-A Tacoma; Recalled OF Chris Snelling and optioned OF Jamal Strong to Tacoma.
- Washington Nationals
- Announced RHP Sun-Woo Kim was claimed off waivers by the Colorado Rockies; Reinstated OF Tony Blanco and INF Henry Mateo from the 15-day disabled list, then outrighted Mateo to Double-A Harrisburg.