Event: 2021 Summer Rapid Play

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Opponent Rating Result
Barry A Cheal 2192 0 - 1
Andrew Du Boulay 1780 1 - 0
Michael Humeniuk 1480 1 - 0
David R Rudd 1711 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1791 = (7163 + 400 * (2 - 2)) / 4)

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