http://www.baseballprospectus.com/glossary/index.php?context=all&category=true WARP-1 Wins Above Replacement Player, level 1. The number of wins this player contributed, above what a replacement level hitter, fielder, and pitcher would have done, with adjustments only for within the season. WARP is also listed on a player's PECOTA card. The PECOTA WARP listing is designed to correspond to WARP-1, not WARP-2 or WARP-3. WARP-2 Wins Above Replacement Player, with difficulty added into the mix. WARP-3 WARP-2, expanded to 162 games to compensate for shortened seasons. Initially, I was just going to use (162/season length) as the multiplier, but this seemed to overexpand the very short seasons of the 19th century. I settled on using (162/scheduled games) ** (2/3). So Ross Barnes' 7.4 wins in 1873, a 55 game season, only gets extended to 15.2 WARP, instead of a straight-line adjustment of 21.8. WARP是BP的統計數據，用來表示一名球員可以比虛擬的Replacement Player多貢獻 幾勝。WARP-1是最基本的，WARP-2則是將WARP-1加上不同時代的難度調整，WARP-3 將不同球季長度的WARP-2統一放大到162場。 --

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