Weighted on-base average is the most accurate single number for offensive production. Unlike OPS, which just adds OBP and SLG together, wOBA weights every offensive event — walks, singles, doubles, triples, home runs — by how many runs it actually produces, based on historical data.

The weights change slightly each season as the run environment shifts, but the principle is constant: a home run is worth roughly 2x a single, a walk is worth slightly less than a single, and a triple falls between a double and a homer. These weights come from linear weights research going back decades.

wOBA is scaled to look like OBP (league average is around .320), so it’s easy to read if you already understand OBP. But the precision underneath is much greater. This is exactly why Baseball Nut uses wOBA as the hitting foundation for NUT Score — it’s the most reliable measure of what a hitter actually contributes to scoring runs.

What is a good wOBA?

wOBA is the direct input for NUT Score on the hitting side. NUT converts wOBA to runs above average using league-specific constants, then translates that into wins.

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