Virtually every Major League pitcher throws a combination of pitches, with starting pitchers often owning an arsenal of three or more offerings. Relief pitchers, who infrequently face the same batter ...

Each spring, pitchers around baseball experiment with fresh grips and pitch types, adding weapons to their arsenal in hopes of keeping hitters guessing. Add Clay Holmes to the list.

It isn't clear exactly who will benefit the most from ABS challenges, but pitchers who can paint at the top of the zone might get a boost.