Running and Runs: A Look at UBR Data
Yesterday, the great Mitchel Lichtmen gave us a look into how FanGraphs’ latest toy, Ultimate Base Running (UBR). This nifty base-running stat is now on the player pages and a part of WAR. As Dave Appleman noted, UBR (or Bsr, short for base running, on the player pages) has a rather small effect (though not insignificant) on a player’s WAR.
Although small on a player level, UBR (henceforth called Bsr) does help us spot organizational trends, identifying which teams prioritize bag-dashing and the like. Unsurprisingly, the relationship between base running and runs scored is not very meaningful. This should make sense because base running is great, but teams cannot run the bases if they are not getting on base — and they cannot run the bases if they clap a homer.
Looking at the MLB through the 2002 and 2011 seasons, we encounter more than one surprise:
Read the rest of this entry »