Bruce Bochy has put both Cain and Blach in the same games so far this spring to get a look at both against the same competition. Cain has gotten the start in both of those games, so I would assume he’s the leader in the clubhouse at this point.
However, once we take a look at how the two have performed this spring, I think we’ll find out that may not be the case anymore.
Against the Chicago Cubs on February 25, Matt Cain gave up 2 runs (1 earned) on 3 hits with no walks or strikeouts in 2 innings.