Event: U1650R summer league

Opponent Rating Result
Jay Sharman 1580 1 - 0
John Stevens 1304 1 - 0
David Smith 1531 ½ - ½
John Stevens 1304 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1730 = (5719 + 400 * (3 - 0)) / 4)

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