ASTROS -- Purchased contracts of P Rich White and P Brian Moehler from Triple-A Round Rock.
ATHLETICS -- Optioned IF Donnie Murphy to Triple-A Sacramento.
BLUE JAYS -- Placed P Davis Romero and P John Thomson on 15-day DL. Purchased contracts of 1B-OF Matt Stairs, former Orioles P Josh Towers and P Victor Zambrano from Triple-A Syracuse. Assigned former Orioles C Sal Fasano to minor league camp.
DEVIL RAYS -- Placed DH Greg Norton on 15-day DL. Optioned 2B Jorge Cantu and C Shawn Riggins to Triple-A Durham. Assigned former Orioles C Raul Casanova to minor league camp.
DIAMONDBACKS -- Placed P Randy Johnson, OF Carlos Quentin and OF Jeff DaVanon on 15-day DL.
GIANTS -- Optioned P Brian Wilson and P Scott Munter to Triple-A Fresno.
NATIONALS -- Optioned OF Kory Casto and P Saul Rivera to Triple-A Columbus.
PIRATES -- Placed IF Freddy Sanchez on 15-day DL, retroactive to March 23.
RANGERS -- Placed P Eric Gagne on 15-day DL, retroactive to Saturday. Purchased contracts of former Orioles OF Sammy Sosa, former Orioles P Bruce Chen, P Mike Wood, former Orioles IF Jerry Hairston Jr. and IF Matt Kata from Triple-A Oklahoma. Optioned C Miguel Ojeda to Oklahoma. Sent outright P Francisco Cruceta to Oklahoma and IF Adam Fox to Double-A Frisco. Designated P Ezequiel Astacio, OF Marlon Byrd and C Guillermo Quiroz for assignment.
TIGERS -- Purchased contract of P Bobby Seay from Triple-A Toledo. Placed P Edward Campusano and P Roman Colon on 15-day DL and IF Tony Giarratano on 60-day DL.
TWINS -- Purchased contract of former Orioles P Sidney Ponson from Triple-A Rochester. Assigned 1B Ken Harvey to minor league camp.