Event: U1650R summer league

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Opponent Rating Result
Stephen Banks 1375 1 - 0
Stephen Banks 1375 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1375 = (2750 + 400 * (1 - 1)) / 2)

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Opponent Rating Result
Jay Sharman 1580 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1180 = (1580 + 400 * (0 - 1)) / 1)