I know he had TJS in 2017, so the following year was understandable, but the Cubs never stretched him out before surgery, or after surgery. How is a pitcher expected to go deep in to games, and deep in to the season, if he's not allowed to pitch deep in to games?
Starting from 2014, here's his innings pitched. 18.2 40.2, 77.1, 98.2, 46.2, 38.2, 84.1, 119, 168
He was being groomed to NOT be able to pitch deep in to the season. I'm not a fan of that type of development.