Event: A Division

Opponent Rating Result
Alan J Walton 2166 ½ - ½
Niklas Geue 2187 0 - 1
John Jarmany 2183 ½ - ½
Ilya Dubov 1963 1 - 0
Daniel T Lee 2130 1 - 0
John L Bentley 2156 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2198 = (12785 + 400 * (2 - 1)) / 6)

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