The Big Kevin Gausman Breakout Has Arrived, A Review
Back in late August, about a month into the season, I proclaimed that the big Kevin Gausman breakout has arrived. At the time, he had thrown 31 innings and was sitting with an unattractive 4.65 ERA. How could a pitcher’s breakout have arrived if his ERA was actually worse than the 4.48 MLB average?! It’s easy really, it’s all about the peripherals, or underlying skills as I call them. ERA, especially over a small sample like 31 innings, is pretty meaningless and doesn’t tell you a whole lot about how a pitcher has actually pitched. So we dive deeper, look at those underlying skills, which ultimately drive SIERA, a much better indicator of a pitcher’s performance, again, especially over a small sample. We now know that since I posted my breakout article, Gausman posted a sterling 2.51 ERA the rest of the way over 28.2 inning. So yeah, the breakout arrived. Let’s see if anything actually changed though, or if it was merely the luck metrics (BABIP, HR/FB, LOB%) that reverted back toward the league average.