Event: Summer League Division 2

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Opponent Rating Result
Nathaniel Holroyd-Doveton 1696 0 - 1
Peter Cooper 1622 ½ - ½
Robert Porter 1624 ½ - ½
Craig Chatterton 1700 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1561 = (6642 + 400 * (0 - 1)) / 4)

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