Abbreviation rWAR (for Rally WAR, "RallyMonkey", Sean Smith created this version) fWAR rWAR or bWAR WARP WARP Offensive Batting Metric Used BaseRuns based offensive measure, so sum of players batting runs equals team total. wRAA wRAA with additional tweaks Deserved Runs (DRC+) BaseRuns-derived LWTS Fielding #'s Used Total Zone Ratings using PBP when possible. TZR pre-2002, Ultimate Zone Rating 2002 and after TZR pre-2003, Baseball Info Solutions Defensive Runs Saved with Batted Ball Timer 2003 and after FRAA FRAA (non pbp) Starting Point for Pitching WAR Runs Allowed Fielding Independent Pitching Runs Allowed Deserved Runs (DRA) Batting Details Adjusted for park Yes 5-year regressed park factors 3-year park factors Yes, directly modeled year by year Park Factor Applied to Batter or League Average Batter Batter Batter Applied at the PA level League Computes Batting Lg Avgs using entire MLB or individual leagues Ind. Leagues Ind. Leagues Ind. Leagues NA Includes P's in Lg Avg No No No NA Includes ROE Yes No Yes Infield ROE for batters and pitchers, all ROE for fielders Estimates CS for seasons it is unknown Yes No Yes No Includes SB/CS in Batting or Baserunning In Baserunning In Baserunning In Baserunning In Baserunning Includes Positional Adjustments Yes Yes Yes, across lgs always sum to 0 Yes Varies Replacement Level by Lg's Quality of Competition Yes No Yes Yes Caps total contribution by Replacement Level Runs to prevent overvaluing of leadoff hitters Yes No No No Counts SO and non-SO outs separately Yes No Yes Yes Directly uses the PythagenPat WL% estimator to compute Wins Above Avg No No Yes No Runs to win calculation includes the league run environment Yes Yes Yes Yes Runs to wins calculation includes the runs the player adds or subtracts No No Yes No Differentiates between infield and outfield singles from 2003 on. No No Yes All Seasons Adjusts for ability to avoid double plays Yes Yes Yes Yes Adjusts for Non-basestealing baserunning Yes Yes Yes Yes Available in a form with fielding metrics excluded Yes, oWAR is WAR with defensive runs assumed to be zero or average No Yes, oWAR for offensive WAR VORP Fielding Details Uses measures for player range Yes, TZR Yes, UZR or OAA Yes, DRS or TZR Yes, FRAA Uses measures for OF arms and DP ability Yes Yes Yes BRR_ARM and OF_AST measure different facets of OF arms. DP ability is not measured. Uses measures for catcher throwing Yes Yes, rSB from DRS Yes, DRS Yes, SRAA and TRAA Uses measures for good plays and misplays like relay throws or missing the cutoff man No No Yes, DRS No Uses measures for catcher defense including blocking pitches and framing No Yes, FRM for framing, RPP for blocking Yes (DRS), but does not include framing Yes, CSAA and EPAA Pitching Details Years Available 1871-present 1871-present 1871-present 1950-Present, pre-1950 coverage will increase Uses Park Factors Yes, 3-year Yes, 5-year, regressed Yes, 3-year Yes, directly modeled year by year Adjusts Park Factors to parks actually pitched in No No Yes Yes Park Factor applied to pitcher or run support? Lg Avg Pitcher Pitcher Lg Avg Pitcher NA. It is applied at the PA level Run Support Adjusts league average by teams pitched against Yes No Yes No Adjusts league average for interleague play No No Yes No Adjusts replacement level by quality of league Yes No Yes Yes Recent replacement level .320 (52-110) .294 (48-114) (link) .294 (48-114) N/A (replacement level is not set to a specific team record) Directly uses the PythagenPat WL% estimator to compute Wins Above Avg No No Yes No Runs to win calculation includes the league run environment Yes Yes, but not described for batters Yes Yes Runs to wins calculation includes the runs the player adds or subtracts No Yes Yes Yes Adjusts runs to win calculation by length of pitcher's outings No Unclear Yes Yes Yes Adjusts runs above replacement level for when pitcher is starter or reliever Yes Yes, as part of replacement level calculation Yes, but it is applied to avg rather than replacement Yes Yes Adjusts performance by team defense Yes Not applicable since FIP-based Yes As appropriate Yes Adjusts Reliever WAR by Leverage Index Yes Yes Yes, Applied to WAA and then recentered to not affect league total WAA No No Credits starting pitcher for effect on saving/taxing bullpen No No No No Other Details Converts WAR into FA Salary Values No Yes No No Downloadable No Yes, annual and custom reports dowloadable to excel Yes, full historical csv updated daily and usable by anyone with citation and link No, except for 2020-2021, but eventually yes, via leaderboards No (but eventually yes)