Event: Summer League Division 4

Opponent Rating Result
Sarah L White 1512 ½ - ½
Daniel Morgan 1358 0 - 1
David Margerison 1459 0 - 1
Mark A Walker 0 0 - 1
Harry Heather 1679 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

882 = (6008 + 400 * (0 - 4)) / 5)

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