Event: Club Championship

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Opponent Rating Result
Rob Payne 1224 0 - 1
Des J Green 1136 1 - 0
Malcolm Jones 1236 1 - 0
Paul Barrett 1500 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1374 = (5096 + 400 * (2 - 1)) / 4)

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