Event: Division One

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Opponent Rating Result
Michael D Andrews 1424 1 - 0
Hamish Sloan 1495 ½ - ½
David J Turner 1703 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1807 = (4622 + 400 * (2 - 0)) / 3)

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