One of the toughest things to quantify in all of sports is a catcher’s value on defense. Their are so many responsibilities and subtle nuances that go into being a quality Major League backstop. The best of the best are able to deftly juggle the responsibilities of managing a pitching staff, framing borderline pitches, blocking pitches, holding base runners, throwing said runners out when they attempt to steal, and much, much more. Recently I’ve been doing some research into catching defense and I have been somewhat unsatisfied by both the traditional statistics (caught stealing %, passed balls, and so on) and by the advanced metrics (URZ and defensive runs saved). A few excellent studies in particular have been done to analyze a catcher’s ability to frame pitches, but otherwise most analysis is left to judgment. I’ve been compiling some of my own numbers relating to catchers controlling the base running game in order to gain a better understanding of who the best backstops in baseball really are, and I’d like to share some of my findings today.
The spreadsheet below contains catchers or catcher groupings from all 30 Major League teams. Twenty-five Major League teams have primarily used one catcher for at least 50% of their innings behind the plate while the five remaining clubs have worked out of a platoon scenario for one reason or another. For that reason I’ve examined those five clubs as a unit to examine whether or not those platoons are actually working on the defensive side of things.
