Event: Division Three

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Opponent Rating Result
Philip J Jones 113 ½ - ½
Roger Threlfall 131 ½ - ½
Mike J Johnson 122 ½ - ½
Tejas Iyer 58 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

206 = (424 + 400 * (1 - 0)) / 4)

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