Monday April 2nd, 2012
Josh Robbins (Guest Writer): The Factor12 Rating (F12) is an analytic measurement utilizing league average performance to compare the value of all MLB pitchers on 60ft6in.com.
F12 consists of the following twelve statistics incorporating every aspect of pitching:
Innings Pitched (IP); Strikeouts Minus Walks (SO-BB); Fielding Independent Pitching (FIP); Earned Run Average (ERA); Walks plus Hits per Innings Pitched (WHIP); Home Runs per 9 innings (HR/9); Walks per 9 innings (BB/9); Strikeouts per 9 innings (SO/9); Opponents Batting Average (OBA); Opponents On-Base Average (OOBA); Opponents Slugging Average (OSLG); Modified Base-Out Percentage (MBOP) has been adjusted to include wild pitches and balks.
The traditional strikeout statistic places too much value on a pitcher’s ability to retire a hitter via strikes. In fact, strikeouts minus walks differential illustrates a clearer image of a pitcher’s true dominance over hitters and mastery of the strike zone. In 1974, Nolan Ryan recorded a whopping 367 strikeouts while issuing a staggering 202 walks producing a 165 SO-BB differential. Last season, Clayton Kershaw amassed 248 strikeouts and allowed only 54 walks equaling a 194 SO-BB differential. On first glance, Ryan appears to be more dominant. However, Kershaw was far superior in controlling the strike zone. (more…)