On-base plus slugging plus runs batted in
On-base plus slugging plus runs batted in (OPSBI) is a baseball statistic calculated as the normalized sum of a player's on-base percentage and slugging percentage added to their runs batted in. Former Major League Baseball general manager, Jim Bowden, created this statistic. Hall of Fame outfielder, Babe Ruth, holds both the single-season and career OPSBI records.
The basic formula is
where OBP is on-base percentage and SLG is slugging average. These averages are defined as:
- H = Hits
- BB = Base on balls
- HBP = Times hit by pitch
- AB = At bats
- SF = Sacrifice flies
- TB = Total bases
Rewriting the expression to account for the different denominators yields the final expression for OPSBI:
The Top 10 single-season OPSBI performances in Major League Baseball history:
The Top 10 MLB players in lifetime OPSBI through the 2013 season are (active players in bold):
- "Simple stats to evaluate teams, players". ESPN. Retrieved 2013-05-15.