![]() Sprint Speed offers it’s measurement in feet per second and never claims to be making any attempt to gauge how many runs a player provides his team via their baserunning. Double plays are not factored in, stolen bases and tagging up are both ignored, and so is a runner on second advancing home on an extra-base hit. The components of Sprint Speed are taking two bases or more on a non-homer and home to first on weakly hit ground balls. Sprint Speed fits its name as it’s attempting to measure how fast a player is at their fastest moment. Last on the docket, Sprint Speed, or SS, 1 ![]() The main issue with Spd is that it is missing out on a lot of speed-based activity and it doesn’t actually measure the run contributions of a player’s baserunning. Spd was invented by Bill James, and while it is outdated it tends to be the stat that people choose over FanGraph’s other, much better, baserunning stat, UBR or Ultimate Base Running. It doesn’t take into account double plays, advancing multiple bases, or tag plays. Spd takes into account stolen base percentage, frequency of stolen base attempts, runs scored percentage, and the number of triples. Looking at BRR it’s a pretty complete stat, one that tells a lot about the ability of a baserunner, but the lack of including double plays in the equation can be problematic as they are very detrimental to run production on the basepaths. BRR is treated as a plus run stat, meaning that Ronald Acuña Jr.’s 8.6 is 8.6 runs he added to his team via his baserunning ability compared to an average baserunner in the same situations. Double plays are not counted as a positive or negative in the calculation of BRR. First, the leaderboard, 1īRR measures a number of baserunning events: stolen bases, caught stealing, advancing a base on a tag play, and going from first to third/first to home/second to home. Let’s start with Baseball Prospectus’ BRR, or Baserunning Runs. It shouldn’t surprise then that the leaderboards for each stat were slightly, and sometimes massively different, in 2019. That’s three different stats using different variables to answer the same question. Baseball Savant has developed Sprint Speed, Baseball Prospectus has BRR, and FanGraphs chooses to use Spd. Only, it’s really not, because there are three different stats that try to answer the question. There’s no deep truth to what I’m about to write, more of some random thoughts that came about when I was looking into who the best baserunner in the big leagues was this past year.įinding out who’s the best baserunner in Major League Baseball should be easy. Earlier in the year I wrote about the collection of stats I tend to use and I promise, I’m not about to relitigate that article right now. There are other times though where finding the right stat may be difficult and confusing. Often times it’s easy to find the exact stat you may need to answer a question. I enjoy digging into stats, I think that much is clear from this website.
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