A rate stat that weights each offensive outcome by its real run value, scaled to look like on-base percentage.
Weighted on-base average improves on batting average and on-base percentage by giving each event — walk, single, double, triple, home run — the run value it is actually worth, rather than treating all hits equally. It is scaled so the league average sits near on-base percentage, around the low .300s.
wOBA is a strong single-number summary of offensive value. Pairing it with its expected version, xwOBA, separates how a hitter has performed from how well they have hit the ball.
wOBA and wOBA-against are quick reads on hitter and pitcher quality that frame a matchup before drilling into the contact and discipline details.
League-average wOBA sits in the low .300s in a typical season. It is scaled to resemble on-base percentage, so the same intuition applies: higher is better.