Event: William Jeffrey Cup - Margate 30

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Opponent Rating Result
James Cole 1573 0 - 1
James Cole 1590 0 - 1
Colin G Gregory 1443 0 - 1
Colin G Gregory 1443 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1112 = (6049 + 400 * (0 - 4)) / 4)

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