Event: A Division

Opponent Rating Result
Daniel T Lee 2096 1 - 0
Alexander Longson 2358 ½ - ½
Paul Macklin 2343 ½ - ½
Philip Armstrong 1995 1 - 0
Robert McLean 2108 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2340 = (10900 + 400 * (2 - 0)) / 5)

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