Baseball OPS – What is OPS?

In our continuing series on the basics of betting baseball, we turn our attention to a hitter’s OPS or On Base Percentage + Slugging Percentage. Baseball tracks more statistics than any other sport and this is one of the most common tool for assessing a player’s offensive skill. This is quickly becoming a very popular stat. You will see a lot of television broadcasts post OPS on the screen when a batter comes up to bat. Let’s see how you come up with a hitter’s OPS.

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First of all, On Base Percentage (OBP) is a measure of how often a batter reaches base.

The full formula is:

OBP = (Hits + Walks + Hit by Pitch) / (At Bats + Walks + Hit by Pitch + Sacrifice Flies). Batters are not credited with reaching base on an error or fielder’s choice, and they are not charged with an opportunity if they make a sacrifice bunt.

All Time Leaders
Career – Ted Williams .482
Season – Barry Bonds .609 (2004)

Let’s figure out Aaron Judge’s On Base Percentage (OBP) as of September 20th, 2022. He has 167 Hits, 93 Walks, 5 Hit By Pitches, 529 At Bats, and 5 Sacrifice Flies.

(167 + 93 + 5) / (529 + 93 + 5 + 5) = .419 OBP

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To determine a hitter’s Slugging Percentage (SLG), you simply take the Total Bases a player has accumulated on all of his hits and divide it by his number of At Bats.

Total Bases/At Bats

Judge has 372 Total Bases and 529 At Bats.

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372 / 529 = .703 SLG

Now, we take both OBP and SLG and add them together. Judge’s OPS would be .419 + .703 = 1.123

Generally a good OPS is over .900. The great players, like Judge, are over 1.000. Babe Ruth holds the career record with a 1.164 OPS.

All-Time OPS leaders. + – Indicates Hall of Famer. Bold indicates active player.

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Baseball WHIP. What is WHIP?