On-base plus slugging

related topics
{game, team, player}
{rate, high, increase}
{@card@, make, design}
{math, number, function}
{work, book, publish}
{water, park, boat}
{album, band, music}

On-base plus slugging (OPS) is a sabermetric baseball statistic calculated as the sum of a player's on-base percentage and slugging percentage.[1] The ability of a player to both get on base and to hit for power, two important hitting skills, are represented. An OPS of .900 or higher in Major League Baseball puts the player in the upper echelon of hitters. Typically, the league leader in OPS will score near, and sometimes above, the 1.000 mark.

Contents

Formula

The basic formula is

OPS = OBP + SLG \,

where OBP is on-base percentage, and SLG is slugging percentage. These percentages are defined

SLG = \frac{TB} {AB}

and

OBP = \frac{H+BB+HBP} {AB+BB+SF+HBP}

where:

Although OBP and SLG have different denominators, it is possible to rewrite the expression for OPS using a common denominator. This expression is mathematically identical to the simple sum of OBP and SLG:

OPS = \frac{AB*(H+BB+HBP)+TB*(AB+BB+SF+HBP)}{AB*(AB+BB+SF+HBP)}

Interpretation of OPS

Unlike many other statistics, a player's OPS does not have a simple intrinsic meaning, despite its usefulness as a comparative statistic.

One fault of OPS is that it weighs on-base average and slugging percentage equally, although on-base average correlates better with scoring runs[citation needed]. Statistics such as wOBA build on this distinction using linear weights, avoiding OPS' flaws. Magnifying this fault is that the numerical parts of OPS are not themselves typically equal (league-average slugging percentages are usually 75-100 points higher than league-average on-base percentages). As a point of reference, the OPS for all of Major League Baseball in 2008 was .749[2].

Full article ▸

related documents
Losing-Trick Count
Fixed-odds betting
Strike zone
Phutball
Slugging percentage
On-base percentage
Simultaneous double squeeze
End zone
FIFA World Cup Trophy
Passed ball
Randy White (American football)
Delia Gonzalez
Korfball
Brandi Chastain
Southeastern League
Amarillo Dillas
Canadian Baseball League
American Basketball Association
Carolina League
Chillicothe Paints
Ottawa Lynx
Simple squeeze
Bocce
Míchel (footballer)
Hart Memorial Trophy
Betty Cuthbert
Plate appearance
Camden Riversharks
Matt Stairs
Recreativo de Huelva