Giants catcher Buster Posey has begun catching live bullpen sessions for pitchers in the instructional league. This is a huge benchmark in Posey's recovery from devastating injuries to his left leg that occurred in a May 25 home plate collision with Florida's Scott Cousins, which required two surgeries thus far and ended his 2011 season. Though the Giants initially set Nov. 1 as a target date for Posey to catch live bullpen sessions, they hoped he might start a bit earlier, and head trainer Dave Groeschner said Posey is about a week ahead of schedule. "He's been feeling good and progressing well, so there was no reason to wait," Groeschner said.