Event: ECF Online RapidPlay Results 06/10/20

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Opponent	Rating	Result
Davaa Otgonbayer	0	0 - 1
Nigel Holland	1345	1 - 0

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

673 = (1345 + 400 * (1 - 1)) / 2)