Event: Summer League Division 1

Opponent Rating Result
Michael R Handley 2082 0 - 1
Xi-Yang Guo 2049 0 - 1
Jay Ryalls 1721 0 - 1
Peter Ackley 2130 ½ - ½
Daniel JS Sullivan 2069 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1690 = (10051 + 400 * (0 - 4)) / 5)

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