10/20/2010 - Arizona Junior Fall Classic - 2010 Jacob showed a quick, lively arm at the Arizona Junior Fall Classic. He has a strong lower half and a repeatable delivery. He mixes three pitches effectively and stays around the zone. Command needs to improve but he competes with what he has. Upside is tied to athleticism and instruction. He needs to firm up his core and continue to build arm strength and as he learns to harness those things, he'll have a chance to be a solid arm at the next level.