ASTROS: Assigned P Brandon Backe and P Mike Gallo to Triple-A New Orleans. Purchased contract of P Jared Fernandez from New Orleans.
ATHLETICS: Signed C Tom Wilson to minor league contract.
BRAVES: Placed P Paul Byrd on 15-day DL, retroactive to March 26, with right elbow injury. Placed C Eli Marrero on 15-day DL, retroactive to Monday, with strained abdominal muscle. Placed P Armando Alamanza on 15-day DL, retroactive to Wednesday. Optioned P Trey Hodges and IF Wilson Betemit to Triple-A Richmond. Assigned P Tim Drew, P Ryan Glynn, C Joe DePastino, C Lee Evans, IF Jorge Velandia and OF Damon Hollins to Richmond.
BREWERS: Purchased the contracts of P Dave Burba, P Ben Ford, P Adrian Hernandez and IF Trent Durrington.
DEVIL RAYS: Acquired IF-OF Jason Romano from Dodgers in exchange for SS Antonio Perez.
DIAMONDBACKS: Purchased contracts of OF Donnie Sadler and C Bobby Estalella. Placed P Shane Nance, P Casey Fossum, C Robby Hammock on 15-day DL and P Brandon Lyon on 60-day DL. Optioned P Greg Aquino and 3B Chad Tracy to Triple-A Tucson. Assigned C Juan Brito, P Jim Parque, OF Julio Ramirez, P Brandon Villafuerte and C Alan Zinter to minor league camp.
EXPOS: Acquired C Einar Diaz, P Justin Echols and cash from Rangers for C-IF Josh McKinley and P Chris Young. Purchased contracts of P Jeremy Fikac and 1B Luis Lopez from Triple-A Edmonton and added them to minor league camp. Optioned P T.J. Tucker, IF Henry Mateo and OF Endy Chavez to Edmonton. Optioned P Shawn Hill to Double-A Harrisburg. Placed P Tony Armas Jr., P Joey Eischen and 3B Scott Hodges on 15-day DL, retroactive to March 26, and 1B Nick Johnson, retroactive to Wednesday. Placed P Dan Smith on the 60-day DL, retroactive to March 26.
GIANTS: Placed former Orioles OF Jeffrey Hammonds, IF Lance Niekro and P Jason Schmidt on 15-day DL, retroactive to March 26. Purchased contract of P David Aardsma from Triple-A Fresno. Designated P Chad Zerbe for assignment. Optioned OF Jason Ellison, OF Todd Linden, P Noah Lowry and C Trey Lunsford to Fresno. Reassigned P Brian Cooper, P Dave Veres, P Tyler Walker, P Jeff Urban, former Orioles IF Deivi Cruz, IF Francisco Sand and OF Nathan Haynes to minor league camp.
INDIANS: Purchased contracts of P Jeff D'Amico and P Lou Merloni from Triple-A Buffalo. Optioned OF Milton Bradley to Buffalo. Returned P Jason Bere, P Luther Hackman, P Bobby Howry, C Dusty Wathan and IF Chris Clapinski to minor league camp.
MARINERS: Acquired IF Jolbert Cabrera from Dodgers for P Aaron Looper and P Ryan Ketchner.
MARLINS: Acquired P Ben Howard from Padres for P Blaine Neal and optioned him to Triple-A Albuquerque. Transferred P Tim Spooneybarger from 15-day to 60-day DL. Recalled OF Lenny Harris, IF Damion Easley and P Matt Perisho from Albuquerque.
METS: Traded OF Roger Cedeno to Cardinals for C Chris Widger and IF Wilson Delgado.
ORIOLES: Optioned OF Darnell McDonald to Triple-A Ottawa. Returned P Aaron Rakers, P Darwin Cubillian and C Carlos Mendez to minor league camp. Designated P John Stephens for assignment. Purchased minor league contracts of OF B.J. Surhoff, IF Luis Lopez and C Keith Osik.
PIRATES: Optioned P Sean Burnett to Triple-A Nashville. Assigned P Rick Reed to minor league camp.
PHILLIES: Optioned 2B Chase Utley and P Geoff Geary to minor league camp. Reassigned IF Lou Collier, P Jim Crowell and C A.J. Hinch.
REDS: Purchased contracts of P Todd Jones and C Javier Valentin. Transferred P D.J. Mattox from 15- to 60-day DL.
ROCKIES: Placed OF Larry Walker on 15-day DL, retroactive to March 26.
WHITE SOX: Purchased the contract of P Mike Jackson. Optioned C Jamie Burke to Triple-A Charlotte.
KNICKS: Activated C Dikembe Mutombo. Placed F Othella Harrington on injured list with back spasms.
WARRIORS: Signed G J.R. Bremer to contract for rest of season.
TEMPLE: Named Willie Slater wide receivers coach.
UTAH STATE: Announced resignation of athletic director Rance Pugmire.
CAPITALS: Signed LW Mel Angelstad.
COYOTES: Assigned LW Mike Stutzel to AHL Springfield.
HURRICANES: Sent F Ryan Bayda to AHL Lowell.
RED WINGS: Signed D Niklas Lidstrom to two-year contract.