San Francisco Giants catcher Joey Bart left a minor league game on Monday night after being hit by a pitch and is visiting a hand specialist on Tuesday, according to a source. Bart is the club's top prospect and No. 22 overall, per MLB Pipeline, so they'd hate to lose him for an extended period of time. He is hitting .270/.341/.541 with two home runs and eight RBI in the first 10 games with High-A San Jose. Bart has a chance to be Buster Posey's successor as the everyday catcher in another yea[...]