The San Francisco Giants optioned catcher Joey Bart to Triple-A Sacramento on Monday. Bart was called up just before the All-Star break to help fill in with Buster Posey on the injured list, and the team's No. 2 prospect went 2-for-5 with an RBI and a run scored on Sunday. The 24-year-old will continue catching every day in the minors, but if Posey needs more time off or gets injured again in the second half of the season, expect Bart to be right back up. He's hit an impressive .338/.400/.581 ...