Whether Buster Posey can return to the Giants' active roster this seasonremains questionable at best. What's certain is this: The Giants will not downplay thesignificance of losing a catcher who became the National League'sRookie of the Year in 2010 while helping the franchise win itsfirst World Series title since moving to San Francisco. Posey sustained a fractured fibula in his left leg and threetorn ligaments in his left ankle from a collision at the plate withthe Marlins' Scott Cousins in the 12th inning of Florida's 7-6victory Wednesday night.