You calculate BRS% by simply taking all the base runners that score when a certain batter is at the plate and dividing by the total number of base runners on base when a that batter is at the plate.
The average across all of baseball is 15% in any given year, another one of those beautiful numbers that tends to stay the same when you zoom out enough (like BABIP, HR/FB and LOB%). So, let’s look at the Mets.




