  # Figuring Speed Scores

by Tom Ruane  ``` [ ED: The Speed Score was created by Bill James to measure an individual player's speed.] Speed Scores are the average of six factors: Factor 1 (stolen base percentage); f1 = ( SB + 3 ) / ( SB + CS + 7 ) f1 = ( f1 - .4 ) * 20 Factor 2 (stolen base attempts): f2 = ( SB + CS ) / ( SINGLES + BB + HBP ) f2 = Square Root ( f2 ) / .07 Factor 3 (triples): f3 = TRIPLES / ( AB - HR - K ) f3 = f3 / .0016 Factor 4 (runs scored): f4 = ( RUNS - HOMERS ) / ( HITS + BB + HBP - HOMERS ) f4 = ( f4 - .1 ) * 25 Factor 5 (grounded into double plays): f5 = GROUNDED INTO DPS / ( ABS - HR - K ) f5 = ( .063 - f5 ) / .007 Factor 6 (defensive position and range): Determine the player's primary defensive position. If it is... P: f6 = 0 C: f6 = 1 1B: f6 = 2 2B: f6 = ( ( ( PUTOUTS + ASSISTS ) / GAMES ) / 4.8 ) * 6 3B: f6 = ( ( ( PUTOUTS + ASSISTS ) / GAMES ) / 2.65 ) * 4 SS: f6 = ( ( ( PUTOUTS + ASSISTS ) / GAMES ) / 4.6 ) * 7 OF: f6 = ( ( ( PUTOUTS + ASSISTS ) / GAMES ) / 2.0 ) * 6 If any factor is less than zero, convert it to zero. If any factor is greater than ten, convert it to ten. ```  