Event: City Chess League 2021-22

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Opponent	Rating	Result
Alex McDonald	1675	1 - 0
Johan Rydahl	1923	0 - 1
Robert F Willmoth	2220	0 - 1

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

1806 = (5818 + 400 * (1 - 2)) / 3)