Zack Greinke, Junk Merchant
Zack Greinke shouldn’t still be this good. His fastball velocity has ticked down yet again; per Pitch Info, his four-seamer is averaging under 90 mph for the first time in his career. This isn’t a new phenomenon — his velocity has been in slow decline since his masterful 2015 season, when he posted a 1.66 ERA and finished second in Cy Young voting. These days, Greinke makes the news for shunning no-hitters and hitting like a position player more than he does for his pitching. Quietly, though, he’s having another superlative season, defying the slow ravages of time to amass a vintage stat line. His ERA and FIP are both lower than his career averages, which must be gratifying for someone who cares about his FIP more than perhaps any other active pitcher.
The way Greinke has adapted to aging is particularly interesting when compared to his former teammate, Clayton Kershaw, whose adaptations Ben Lindbergh recently chronicled. Kershaw was a singular marvel at his peak, and he remains so today. He’s always been predictable, and it hasn’t seemed to matter. When he was all-caps KERSHAW, he basically never threw a curveball when he was behind in the count. Hitters knew it, and it didn’t matter. Now, he’s throwing more pitches in the zone than ever on 0-0 before throwing fewer than ever in the zone after that. He’s still predictable, only in different ways.
Greinke, by contrast, was never as dogmatic as Kershaw. He’s thrown 62.5% fastballs when down in the count for his career, compared to Kershaw’s 72.8%. His first-pitch zone percentage this year, 52.3%, is actually below his career average, whereas Kershaw’s 61.3% rate is the highest of his career. Greinke has also always erred on the side of more pitches rather than fewer, throwing most of his pitches in any count and any location. Despite this difference in mindset, though, Greinke and Kershaw’s 2019s share two major themes: fewer fastballs, and using the count (and base/out state) to their advantage. Read the rest of this entry »