Event: A Division

Opponent Rating Result
Tetsuaki Sanada 1870 0 - 1
Adam Tyton 1901 ½ - ½
Marco Enciso 1750 1 - 0
Armand Catz 1804 0 - 1
Malcolm R Peacock 2074 1 - 0
Andy Laurence Coe 1796 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1799 = (11195 + 400 * (2 - 3)) / 6)

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