Event: Harrogate Evening League 2019-20

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Opponent	Rating	Result
Peter Rawcliffe	141	0 - 1
Mike R Stokes	170	0 - 1
Michael Johnson	135	0 - 1

performance = (sum(opponents ratings) + 400(wins-losses)) / games

-251 = (446 + 400 * (0 - 3)) / 3)