Event: League

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Opponent Rating Result
Richard J Walsh 0 0 - 1
W Douglas McLellan 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

0 = (0 + 400 * (1 - 1)) / 2)

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Opponent Rating Result
John Marshall 0 1 - 0
John A Metcalfe 0 0 - 1
Vance Hodkinson 0 1 - 0
Tim Lounds 0 0 - 1
Daniel Holden 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-80 = (0 + 400 * (2 - 3)) / 5)