As an example, Cubs general manager Jed Hoyer conducted a mid-season tear-down of his roster that was virtually guaranteed to produce a negative rating for Hoyer by season’s end.
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That means if we say a GM impacted his team by +2.5 games in 2021, he cumulatively improved his team’s fortunes by that many games.Ĭonversely, a GM with a negative cumulative WAA can be said to have hurt his team’s pennant prospects by that amount.īroadly speaking, an MLB general manager can impact his team in any of five ways: by the trades, purchase, and waiver claims he makes, by his free agent signings or extensions, by his farm system callups, by the players he trades away, and by the players he releases or loses to free agency.Įach general manager should, of course, be judged in the context of what they are attempting to accomplish. WAA is an offshoot of WAR, and it is ideal for this purpose because unlike WAR it is zero-based. The value is determined by the Wins Above Average (WAA) generated by the player during 2021. The sum of the values is the GM’s rating.
We attach a value to every personnel move made since the conclusion of the 2020 season last October. Our standard for evaluating the performance of a general manager (or other chief executive who holds a functionally similar title) is simple.