Event: Division 1

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Opponent Rating Result
Paul McMahon 1940 0 - 1
Paul McMahon 1911 ½ - ½
Anthony Chan 1600 1 - 0
Anas Ibn Saifullah 1800 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1813 = (7251 + 400 * (1 - 1)) / 4)

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Opponent Rating Result
Paul McMahon 1921 0 - 1
Nathan Weersing 1566 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1744 = (3487 + 400 * (1 - 1)) / 2)