Event: Division 1

Opponent Rating Result
Steve Kee 2137 0 - 1
Komronbek Bahtiyorov 1927 ½ - ½
Simon Johnson 1913 ½ - ½
Piotr Januszewski 2004 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1895 = (7981 + 400 * (0 - 1)) / 4)

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