Event: Division B

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Opponent Rating Result
Thisumi Jayawarna 1651 0 - 1
Chris Jardine 1804 0 - 1
Tony Byrne 1518 1 - 0
Tony Byrne 1518 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1523 = (6491 + 400 * (1 - 2)) / 4)

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