Drew Storen Finds His Strikeouts
A little over a month ago, I wandered into the depths of the Baseball Prospectus PITCHf/x leaderboards, looking to see who had the most increased movement on their breaking pitches through the first month of the season compared to last year. As you might imagine, increased movement doesn’t always mean increased success, and so many of the names that turned up were interesting but inconclusive: seeing names like Rick Porcello and Ross Detwiler leading best-of lists tells us that the article was a fun exercise, if not a totally meaningful one.
However, there were a couple of interesting names when it came to right-handed pitchers with increased horizontal movement on their sliders. First, there was Sonny Gray, who is now the proud owner of a top-three slider by run value this year. Then, coming in a close third after Seth Maness, was Drew Storen. Unlike Gray and Maness, Storen has been around for a while, so the prospect of him tinkering with pitches (especially after four mostly successful years), drew some attention.
That attention was, and is, warranted: Storen’s slider (PITCHf/x calls it a slider; some say it’s a cutter. For ease, we’ll go with slider) now has over two inches of greater horizontal movement than last season, and at least one inch more than his previous career-high. Take a look at the horizontal movement change of his slider over his career, courtesy of Brooks Baseball:
