Assuming he can actually use it, this is probably a good thing, right? Think JJ is teaching him the split, or would it be Stottlemeyer?
75 word Wikipedia fun fact:
A split-finger fastball or splitter is a pitch in baseball and a variant of the straight fastball. It is named after the technique of putting the index and middle finger on different sides of the ball, or "splitting" them. When thrown hard, it appears to be a fastball to the batter, but suddenly "drops off the table" towards home plate—that is, it suddenly moves down, towards the batter's knees. It is thrown today by many pitchers, including Roger Clemens, John Smoltz, Curt Schilling, Dan Haren, and Rich Harden, a reflection of its popularity amongst power pitchers.