What Is a Good OPS in Baseball

Overview

OPS, or On-base Plus Slugging, is a widely used baseball statistic that combines two important offensive metrics: on-base percentage (OBP) and slugging percentage (SLG). It serves as a comprehensive indicator of a player’s ability to both reach base and hit for power. Determining what a good OPS is can vary depending on league averages, era, and playing conditions, but it remains a central statistic in player evaluation.

Detailed Explanation

OPS is the sum of a player’s on-base percentage and slugging percentage. On-base percentage measures how frequently a player reaches base via hits, walks, or being hit by a pitch, while slugging percentage measures the total bases a player earns per at-bat, reflecting their power-hitting ability. By combining these, OPS provides a single figure representing a player’s overall offensive productivity.

Interpreting OPS involves comparing a player’s value against league averages or historical benchmarks. League average OPS typically hovers around .720 to .740 in modern Major League Baseball (MLB), but this can fluctuate based on offensive environment. For example, in a high-scoring era, average OPS values may be higher, while pitching-dominant eras tend to have lower averages.

How It Works

To calculate OPS, first determine the player’s on-base percentage (OBP) and slugging percentage (SLG).

• On-base percentage (OBP) = (Hits + Walks + Hit By Pitch) / (At Bats + Walks + Hit By Pitch + Sacrifice Flies)
• Slugging percentage (SLG) = Total Bases / At Bats

Once these percentages are calculated, OPS = OBP + SLG.

For example, a player with an OBP of .360 and an SLG of .450 would have an OPS of .810.

Examples

• Average OPS: Approximately .720 to .740, representing a typical Major League hitter.
• Good OPS: Around .800 to .850, indicating above-average offensive ability.
• Excellent OPS: Above .900, often associated with All-Star caliber players.
• Elite OPS: Over 1.000, a rare achievement indicating exceptional hitting performance.

For instance, players like Mike Trout and Mookie Betts often post OPS values above .900, reflecting their strong offensive skills. Conversely, a bench player or pitcher might have an OPS below .600.

Why It Matters

OPS is valuable because it combines two critical components of offensive performance into a single metric, offering a more complete view than batting average alone. Batting average only accounts for hits per at-bat and ignores walks and power, while OPS incorporates both the ability to get on base and to hit for extra bases. This makes OPS a better predictor of a player’s run-producing potential and overall offensive contribution.

Common Misconceptions

Misconception: A higher OPS always means a better hitter.
Correction: While a higher OPS generally indicates better offensive performance, it does not account for defensive skills, baserunning, or situational hitting, which are also important to overall player value.

Misconception: OPS is equally valuable across all eras and leagues.
Correction: OPS should be contextualized relative to league averages and playing conditions because offensive environments vary considerably over time and by league.

Pros and Cons

Comparison Table

Decision Checklist

• Use this if: You want a quick, combined measure of a player’s ability to reach base and hit for power.
• Avoid this if: You need a more comprehensive evaluation that includes defense, baserunning, or situational hitting.
• Check this first: Compare the OPS to league averages and consider the era to contextualize its meaning.

What is the easiest way to understand OPS?

The easiest way to understand OPS is to think of it as a simple sum of two important skills: how often a player gets on base and how many bases they earn when hitting. A higher OPS means a player is more effective offensively, either by reaching base frequently, hitting for power, or both.