Offensive baseball statistics can be overwhelming to the casual fan, but understanding what they mean and how they are used to evaluate players can help to make sense of the game. Two of the most important metrics used to evaluate batters are on-base percentage (OBP) and slugging percentage (SLG). Each of these metrics provide an understanding of a player’s ability to get on base and to hit for power, respectively. Understanding what a good OBP and SLG are is important to properly evaluating a player’s offensive performance.

## What is On-Base Percentage (OBP)?

On-base percentage is one of the most important metrics used to measure a player’s offensive performance. It is a measure of how often a batter reaches base safely either via hit, walk, or hit by pitch. It is calculated by dividing the total number of times a player reaches base safely (H + BB + HBP) by the total number of times a player comes to bat (AB + BB + HBP + SF). The formula for OBP can be written as:

## OBP = (H + BB + HBP) / (AB + BB + HBP + SF)

### What is a Good OBP?
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A good OBP is generally considered to be anything above .350. This is because a player with an OBP of .350 is considered to be a “good” offensive player. A player with an OBP of .400 is considered to be an “elite” offensive player, while a player with an OBP of .300 or below is considered to be a “poor” offensive player. Generally speaking, the higher a player’s OBP, the better their offensive performance.

## What is Slugging Percentage (SLG)?

Slugging percentage is another important metric used to measure a player’s offensive performance. It is a measure of how often a batter reaches base safely and how many bases they advance when they reach base. It is calculated by dividing the total number of bases a player advances (1B + 2B + 3B + HR) by the total number of times they come to bat (AB). The formula for SLG can be written as:

## SLG = (1B + 2B + 3B + HR) / AB

### What is a Good SLG?
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A good SLG is generally considered to be anything above .400. This is because a player with an SLG of .400 is considered to be a “good” offensive player. A player with an SLG of .500 is considered to be an “elite” offensive player, while a player with an SLG of .300 or below is considered to be a “poor” offensive player. Generally speaking, the higher a player’s SLG, the better their offensive performance.

## Conclusion

On-base percentage and slugging percentage are two of the most important metrics used to measure a player’s offensive performance. Understanding what a good OBP and SLG are is important to properly evaluating a player’s offensive performance. Generally speaking, a good OBP is considered to be above .350, while a good SLG is considered to be above .400. The higher a player’s OBP and SLG, the better their offensive performance.