The Giants are unwilling to concede that star catcher Buster Posey is done for the 2011 season with a fracture in his lower left leg.Florida Marlins' Scott Cousins, top, collides with San Francisco Giants catcher Buster Posey (28) on a fly ball from Emilio Bonifacio during the 12th inning of a baseball game in San Francisco, Wednesday, May 25, 2011. Cousins was safe for the go ahead run and Florida won 7-6. Posey was injured on the play.Florida Marlins' Scott Cousins, top, collides with San Francisco Giants catcher Buster Posey (28) on a fly ball from Emilio Bonifacio during the 12th inning of a baseball game in San Francisco, Wednesday, May 25, 2011. Cousins was safe for the go ahead run and Florida won 7-6.