Speed Score

Speed Score is a statistic used in Sabermetric studies to evaluate a baseball player's speed. It was invented by Bill James, and first appeared in the 1987 edition of the Bill James Baseball Abstract.[1]

Speed Score includes five factors: stolen base percentage, stolen base attempts as a percentage of opportunities, triples, double plays grounded into as a percentage of opportunities, and runs scored as a percentage of times on base.[2] Baseball Prospectus has developed a modified version of Speed Score that equally weights each component.[3]