The Basepath Misadventures of Jose Pirela
As baseball analysis has grown, the advanced metrics have begun to find their way into television broadcasts more regularly. Announcers will occasionally mention win probability in terms of game context. Pitcher FIP will be brought up alongside ERA. The slew of batter statistics — wOBA, wRC+, ISO, et al — will be used to shed further light on hitters. Even fielding metrics like UZR and DRS have slowly started creeping their way into viewers’ homes, at least from national television broadcasts.
The one quantifiable area of the game that seems to get a little less sabermetric coverage from broadcasters is baserunning. Stolen bases are of course referenced, and Statcast sprint speeds are a relatable number that does occasionally get mentioned. However, the concept of baserunning runs (BsR) has not made its way to television in the way that its fielding counterparts have.
While the introduction of Statcast sprint speeds to the public is a step forward in understanding how good a baserunner is, it doesn’t tell the whole story. Rather, it tells something more akin to the potential baserunning value that a player can bring. Activating that potential involves no small amount of baserunning instincts for basically anyone who lacks Billy Hamilton’s speed. Looking at one player in particular from 2018 clearly shows us why in explaining runner ability, broadcasts need to go beyond sprint speed.
