Event: Summer League Division 1

Opponent Rating Result
Jim Davis 1887 ½ - ½
Henry Withington 158 0 - 1
Geoff Frost 1837 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1161 = (3882 + 400 * (0 - 1)) / 3)

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