Event: Riviera U1900 2023

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Opponent Rating Result
Brendan O'Gorman 1799 0 - 1
Ronnie Burton 1776 0 - 1
Gerard T'hart 1759 0 - 1
Nigel W Dennis 1772 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1577 = (7106 + 400 * (1 - 3)) / 4)

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