On-base percentage (OBP) is a baseball statistic that measures how often a player reaches base. It includes hits, walks, and hit-by-pitches, divided by the total number of plate appearances, excluding sacrifices. A higher OBP indicates a player is more effective at getting on base, which is crucial for scoring runs. OBP is an important metric for evaluating a player's offensive performance. Unlike batting average, which only considers hits, OBP provides a broader view of a player's ability to contribute to their team's offense. Teams often prioritize players with high OBP to improve their chances of winning games.