Christian Yelich’s .402 ISO is the highest single-season mark of any player with at least 200 PAs in the last ten years. Matt Olson’s 2017 ISO of .392 is the next highest. To do what Olson’s did that summer many things had to click. Exit velocity, launch angle, “juiced” baseballs, etc. Since then Olson’s results haven’t been nearly as good as they were in 2017, but so much about Olson’s profile is actually better.
Starting with the Basics
Olson’s 0.45 BB/K ratio is the highest of his career, and much better than it was in 2017.