Event: A Division

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Opponent Rating Result
Mariana Mosnegutu 188 1 - 0
Sean Cassidy 118 1 - 0
Ron A Stather 133 1 - 0
Royce Parker 136 ½ - ½
David Smith 88 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

453 = (663 + 400 * (4 - 0)) / 5)

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