He made a big step forward last year and might have made it to AA by the end of the season (probably not, though) if he hadn't gotten hurt. His step forward this year is even bigger, though. His BABIPs as a pro are .358, .337, .347, and .340. His ISO are .119, .081, .145, and .197. His BB% are 4.3, 4.1, 5.3, 10.2. His K% are 22.6, 19.5, 17.0, 20.3. He was 7/10, 8/16, 25/29, and 15/16 as a base stealer over those four years. Looks like pretty steady progress from where I stand.