Table of Contents
Here’s the table of contents for today’s edition of the Daily Notes.
1. Best and Worst Base-Stealers, By One Measure
2. Today’s MLB.TV Free Game
3. Today’s Complete Schedule
Best and Worst Base-Stealers, By One Measure
Introduction
With regard to the art and science of base-stealing — and assessing its best and worst practitioners — it’s fair to say that there are two main elements one must consider. First, a runner must steal bases efficiently per attempt. Some combination of empirical study and also Pete Palmer reveal that, depending on the run environment of the league or park or whatever, a runner must generally be successful on something like two-thirds or three-quarters of his stolen-base attempts just to break even in terms of runs gained or lost.
Moreover, to be regarded as a legitimate base-stealing threat, a runner must also attempt to steal rather frequently per stolen-base opportunity. It’s fair to say that, all things being equal, two runners who’ve finished the season 5-for-5 on stolen-base attempts have been equally valuable in terms of runs produced from stolen bases. However, if the former player did so in 100 opportunities while the latter did it in just 20, then surely the latter must be regarded as the more impressive base-stealer.
To account both for the efficiency and frequency of 2013’s base-stealers, the author has first calculated every major leaguer’s stolen-base runs using the current linear-weight values both for stolen bases and caught stealing, and then divided that figure by stolen-base opportunities (i.e. plate appearances during which a runner is on first or second with the next base open). Finally, the author has multiplied that result by 100, such that one is left with stolen-base runs per 100 stolen-base opportunities.
The results of those calculations are available below.
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