The Royals have a pitcher who is about to enter his age-25 season who has pitched three full seasons and has been above average (at least by ERA) in all three of them. He’s actually been at least 40 percent above league average in that stat in two of the three. He also has given up the fewest homers in baseball since his debut among pitchers with at least 300 innings and the fewest home runs per nine innings, so it’s not really a fluke of him having fewer innings than most. And among that group, he has the third highest ground ball rate.
Evaluating and Extending Brad Keller
