He’s Bradley Zimmer, one of the best baseball players to ever come out of the University of San Fransisco, making him just one of two things I know about the University of San Fransisco (the other being that Bill Russell and K.C. Jones played there before joining the Celtics. Go Dons!) The Red Sox signed him to a minor league free agent contact after he was released by the Dodgers.
What position does he play?
Centerfield, almost exclusively.
Is he any good?
There was a time when people thought he was going to be real good.