on-base percentage

noun

on-base per·​cent·​age ˈȯn-ˈbās-pər-ˈsen-tij How to pronounce on-base percentage (audio)
baseball
: a statistic that is expressed as a 3-digit decimal and that indicates the frequency with which a batter reaches base by a hit, a walk, or being hit by a pitch

Note: A batter with an on-base percentage of .350 has reached base 3.5 times for every 10 at bats.

Through Sunday he led the league in on-base percentage (.479) and hits (40) and was second in runs scored (21) and ninth in slugging percentage (.515).Ivan Maisel
… he understood that on-base percentage was a far better tool to evaluate a hitter than batting average …Tom Verducci

Examples of on-base percentage in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
While the walks have helped increase his on-base percentage, his slugging percentage has gone down. Jeff Fletcher, Oc Register, 25 Apr. 2026 The Cubs rank in the top four among big-league teams in multiple key offensive categories, including on-base percentage (first), fWAR (second), weighted on-base average (third), batting average (third), OPS (third), walk rate (fourth) and slugging percentage (fourth). Meghan Montemurro, Chicago Tribune, 24 Apr. 2026 Base running Thanks to top-10 rankings in walk rate and on-base percentage, the Twins have had plenty of base runners and plenty of chances to follow through on promises of more aggressive base running. Aaron Gleeman, New York Times, 13 Apr. 2026 Entering Friday, the Mariners ranked second-worst in MLB in runs per game and strikeouts, and last in batting average, on-base percentage and total bases. Mac Cerullo, Boston Herald, 12 Apr. 2026 See All Example Sentences for on-base percentage

Word History

First Known Use

1941, in the meaning defined above

Time Traveler
The first known use of on-base percentage was in 1941

Browse Nearby Words

Cite this Entry

“On-base percentage.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/on-base%20percentage. Accessed 30 Apr. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster