Event: Division 3

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Opponent Rating Result
James Lee 1554 0 - 1
Daniel Westhead 1364 0 - 1
Christian Gorchev 1565 0 - 1
Graham Heath 1418 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1275 = (5901 + 400 * (1 - 3)) / 4)

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