Weighted Runs Above Average is a sabermetric statistic that translates a hitter’s weighted on-base average into the language of runs.
By comparing a player’s wOBA to league average and scaling by plate appearances, wRAA tells us how many runs a batter added or cost his team relative to an average hitter.
Use the quick calculator below to see exactly how many runs a player’s bat is worth.
This statistic is particularly valuable for teams looking to evaluate player performance and make strategic decisions based on hitting contributions.
Additionally, for those interested in a more comprehensive analysis of a player’s offensive impact, a weighted runs created plus calculator can provide insights that account for ballpark factors and league performance.
Using these metrics together allows for a clearer understanding of a player’s value in different contexts.
In addition to evaluating a player’s hitting performance, teams often consider other metrics to gain a comprehensive understanding of a player’s overall contribution.
One useful tool in this analysis is the weighted stolen base runs calculator, which quantifies the impact of a player’s baserunning ability on their team’s scoring potential.
By incorporating both hitting and baserunning metrics, teams can make more informed decisions regarding player value and strategy.
This metric is particularly useful for assessing a player’s overall offensive contribution, as it considers various factors such as walk rates and the ability to reach base.
Additionally, the weighted runs created formula incorporates the context of each plate appearance, allowing for a more nuanced understanding of a player’s impact on scoring.
As such, wRAA serves as a vital tool for analysts and teams to evaluate talent and inform strategic decisions.
Weighted Runs Above Average FAQ
What is a good wRAA number?
A wRAA around +20 indicates an All-Star level hitter, while +40 or more points to MVP caliber offense.
Does wRAA include baserunning or fielding?
No, wRAA measures batting only.
Other components like UBR and UZR cover baserunning and defense.
Why is plate appearances used instead of at bats?
Using plate appearances credits hitters for walks and hit-by-pitches, keeping the metric aligned with wOBA.
How often are league wOBA and the scale updated?
They are recalculated every season and can be updated during the year as more data becomes available.
Can wRAA be negative?
Yes.
A negative wRAA means the player created fewer runs than an average hitter and hurt his team offensively.