Top Prospects: Keller, PIT
March 1, 2016 | 00:00:52
2016 MLB.com Top Prospects: Mitch Keller is tall and projectable with a fastball that now sits in the 90-94 mph range
2016 MLB.com Top Prospects: Mitch Keller is tall and projectable with a fastball that now sits in the 90-94 mph range