From 18-21 (even including his late season skid), he was a guy who generally had a low xBA/xSLG and high K%.
His curveball doesn't have quite the bite it used to have, but he's still getting movement on his FB. His velo is down a tick, but that could also just be from missing a lot of time due to injury. I'm looking to him to be more productive next season after a full offseason. I think he'll be a decent 7th/8th inning guy.
Since coming back from the IL on 8/4:
18.2 IP
18 K
6 BB
16 H
4 ER
302 BABIP (about career norm)
1.18 WHIP
1.93 ERA
2.48 FIP
4.30 xFIP (since he gave up 0 HR)