Pittsburgh 4
Boston 4
Anaheim 3
Florida 3
St. Louis 2
Baltimore 2
I believe everyone else that has one is at 1. I think.
Also, every division has had a winner.
NL West: AZ, Colorado, Los Angeles
NL Central: Pittsburgh, St. Louis
NL East: Florida (although I think everyone but Washington has been there)
AL West: Anaheim
AL Central: Minnesota, Detroit, Chicago, Cleveland
AL East: Boston, Baltimore