Event: Billingham Synthonia November 2022 Rapid

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Opponent Rating Result
Graham E Edwards 1270 0 - 1
Bernie Callaghan 1615 0 - 1
Graham Bartram 1456 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1314 = (4341 + 400 * (1 - 2)) / 3)

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