Event: Harrogate Evening League 2022 season

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Opponent Rating Result
Mark W Rogerson 2099 0 - 1
Mark Daley 0 1 - 0
Andrew B Mata 1941 ½ - ½
Jeff Dutton 1578 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1405 = (5618 + 400 * (1 - 1)) / 4)

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