Weighted Stolen Base Runs Above Average (wSBRA) estimates how many runs a player adds by stealing bases, relative to the league.
Use the calculator below to turn raw stolen base totals and opportunities into an intuitive run value.
Whether you are comparing fantasy targets, evaluating prospects, or just satisfying your curiosity, a quick plug of the numbers reveals who truly moves the needle on the basepaths.
Weighted Stolen Base Runs Above Average (wSBRA) Calculator
Weighted SB Runs FAQ
What is wSBRA?
It is the run value a player adds through stolen base attempts, measured against league average success rates.
Why are there default league values?
Using average run impacts for successful and failed steals keeps the calculation comparable across seasons and ballparks.
Can I use my own run values?
Yes.
If you have park adjusted or era specific run impacts, just enter them in the league fields before hitting the button.
Does wSBRA include pickoffs?
No. It only measures events scored as stolen bases or caught stealing.
Pickoffs would need a separate adjustment.
How precise is a three decimal answer?
Three decimals lets you see small differences while staying well within the noise of run expectancy models.
"