Event: NSDCA Division 4

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Opponent Rating Result
Roger Coleman 1236 1 - 0
Owen Frodsham 1074 ½ - ½
Roger Coleman 1207 0 - 1
Joe Hulme 1250 0 - 1
Rob Aked 1239 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1041 = (6006 + 400 * (1 - 3)) / 5)

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