Event: Grand Prix S4

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Opponent Rating Result
David A Hallen 1486 0 - 1
Colin Abell 1509 0 - 1
Charlie G Swinson 1429 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1075 = (4424 + 400 * (0 - 3)) / 3)

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