Walks are up, power is way up, line drive percentage is up, K's are down over last year. He's got a .719 OPS, compared to a league-average for 2b of .700. And that's with a completely normal, maybe even a tiny bit unlucky, BABIP. The eye test, scouting reports and advanced statistics all say he's one of the best defensive 2b in the league, bordering on elite defense there. He's on pace for a 3 fWAR season.