Event: Harrogate Evening League 2018-19

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Opponent Rating Result
Richard Tate 116 1 - 0
Ranyl W Hughes 89 1 - 0
Robert Carrington 0 1 - 0
David Halpin 61 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

467 = (266 + 400 * (4 - 0)) / 4)

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