Event: U1650R summer league

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Opponent Rating Result
Ivan Hutcheson 1421 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1021 = (1421 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
David Filer 1622 0 - 1
A Fin O'Regan 1026 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1324 = (2648 + 400 * (1 - 1)) / 2)