Event: Billingham Synthonia November 2022 Rapid

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Opponent Rating Result
Bernie Callaghan 1615 1 - 0
Graham E Edwards 1270 1 - 0
Darren John Donnison 1577 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1887 = (4462 + 400 * (3 - 0)) / 3)

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