Is Jon Lester personally responsible for more wins this season than any other Red Sox? If Sarah Green, of the baseball blog UmpBump, is to be believed, yes, he is. She has compiled a pie chart showing the Wins Above Replacement, or WAR, of every Red Sox player with a positive rating. WAR is a new-fangled statistic that takes into account batting, baserunning, tendency to hit into double plays, and various aspects of defense to determine how many runs, and, consequently, wins, each player can take credit for. (It's briefly described here.)
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