Event: Division One

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Opponent Rating Result
James N Stayt 1931 ½ - ½
James N Stayt 1910 ½ - ½
Majid Mashayekh 1875 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1772 = (5716 + 400 * (0 - 1)) / 3)

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