Buster Posey was carted through a tunnel at AT&T Park on Thursday, a makeshift cast covering his left ankle and no emotion on his face. A night after Florida's Scott Cousins crashed into him at home plate, San Francisco's catcher was put on the disabled list with a fractured bone in his lower left leg. Posey has a broken fibula and severely strained ligaments in his left ankle and will miss at least six to eight weeks, Giants head trainer Dave Groeschner told the San Francisco Chronicle. Posey will need surgery on his ankle, Groeschner said, and it is possible a screw could be inserted. "The fracture will be fine," said Groeschner. "The ankle injury is most concerning to us."