Union representatives for each of the 30 Major League teams, with alternates in parentheses:

AMERICAN LEAGUE

Baltimore: Jay Gibbons
Boston: Kevin Youkilis (Jonathan Papelbon)
Chicago: Paul Konerko (Mark Buehrle)
Cleveland: Casey Blake
Detroit: Mike Maroth
Kansas City: John Buck (David DeJesus)
Los Angeles: John Lackey
Minnesota: Michael Cuddyer (Mike Redmond)
New York: Mike Mussina
Oakland: Mark Kotsay (Mark Ellis)
Seattle: Joel Pineiro
Tampa Bay: Josh Paul (Rocco Baldelli)
Texas: Mark Teixeira (Adam Eaton)
Toronto: Vernon Wells (Reed Johnson)

NATIONAL LEAGUE

Arizona: Andy Green (Conor Jackson)
Atlanta: Chris Reitsma
Chicago: Will Ohman
Cincinnati: Aaron Harang
Colorado: Ray King
Florida: Wes Helms (Joe Borowski)
Houston: Morgan Ensberg
Los Angeles: Kenny Lofton (Mark Hendrickson)
Milwaukee: Chris Capuano (Rick Helling)
New York: Aaron Heilman (David Wright)
Philadelphia: Jimmy Rollins
Pittsburgh: Paul Maholm
St. Louis: Braden Looper
San Diego: Chris Young (Jake Peavy)
San Francisco: Randy Winn (Noah Lowry)
Washington: John Patterson (Ryan Zimmerman)