A baseball statistic that represents the sum of a batter's On-base Percentage (OBP), which measures a players ability to get on base, and Slugging Percentage (SLG), which measures a players ability to hit with power to gain doubles, triples and home runs. On-base Plus Slugging Percentage is a type of Sabermetrics.
A player with a high On-Base Plus Slugging Percentage (OPS) is typically able to both get on base and hit for power. Players with an OPS of .900 or higher are generally considered to be the best and most desirable hitters.
The all-time leader in OPS (minimum 3000 plate appearances) is Babe Ruth at 1.1638.