Event: Division 3

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Opponent Rating Result
Richard Myhill 1470 ½ - ½
Kelly Obalim 1200 1 - 0
Wan Sarah Wan Ahmad Kamil 1350 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1340 = (4020 + 400 * (1 - 1)) / 3)

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