On Base Percentage Calculator (OBP): On Base Percentage (OBP) is a baseball statistic that measures how frequently a batter reaches base by any means — through a hit, a walk, or being hit by a pitch — compared to their total number of opportunities at the plate.
ERA Calculator: The number of earned runs a pitcher gives up in a regulation game, which usually lasts nine innings (or seven innings in some leagues), is measured by the Earned Run Average (ERA).
Slugging Percentage Calculator: Slugging Percentage (SLG) is a baseball statistic that measures a hitter’s power by calculating how many total bases they earn per at-bat.