Event: Summer League Division 4

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Opponent Rating Result
Paul Wheatley 0 0 - 1
Craig Chatterton 1555 ½ - ½
Sourabh Dahiphale 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

252 = (1555 + 400 * (0 - 2)) / 3)

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