war「代替可能選手だけで構成されたチームの勝率は.294です」

warの定義に挑戦する球団

Both Baseball-Reference and Fangraphs use an ad hoc method for determining their replacement level.
Either way, their replacement level is “set at 1,000 WAR per 2,430 Major League games, which is the number of wins available in a 162 game season played by 30 teams. Or, an easier way to put it is that our new replacement level is now equal to a .294 winning percentage, which works out to 47.7 wins over a full season.”
https://hockey-graphs.com/2019/01/18/wins-above-replacement-replacement-level-decisions-results-and-final-remarks-part-3/