Event: Aylsham Championship

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Opponent Rating Result
John R Wickham 1707 ½ - ½
David M Owen 1711 ½ - ½
Ashley Robinson 1611 1 - 0
Tony Mooney 1608 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1759 = (6637 + 400 * (1 - 0)) / 4)

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