Event: Online League Division 1 (Autumn 2020)

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Opponent	Rating	Result
Tom Townsend	0	0 - 1
David J White	0	1 - 0
Tim M Joslin	1887	0 - 1

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

496 = (1887 + 400 * (1 - 2)) / 3)