Event: Division 2

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Opponent Rating Result
Mike Angel 1579 ½ - ½
Mike Angel 1408 1 - 0
Nathan Weersing 1572 0 - 1
Yoav Pilowsky Bankirer 1726 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1471 = (6285 + 400 * (1 - 2)) / 4)

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