BPro: Introducing Range Defense Added

Like Outs Above Average and the Plus/Minus metric for DRS, RDA is a range metric that measures the extent to which a given fielder converts a fielding opportunity into an out. One fielder, typically the person who picks the ball up first, is credited with the fielded play, and to the extent the play was converted into an out, the fielder is credited (or penalized) the difference between the outcome of the play (out/no out) and the average expected success of a fielder in making that out. RDA is calculated for all fielders with at least one fielded ball and is currently calculated for all MLB players from 2015 through 2022. Additional contributions like the receiving/scooping of attempted outs and multiple-out relays are in line for future study.