Event: Walker Shield

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Opponent Rating Result
Zach Roche 1000 0 - 1
Bob Wallace 1387 0 - 1
Matt Davies 1200 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

796 = (3587 + 400 * (0 - 3)) / 3)

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Opponent Rating Result
Leo Nauta 1000 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1400 = (1000 + 400 * (1 - 0)) / 1)