Event: Club Championship 2021-22

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Opponent	Rating	Result
John Taylor	1216	1 - 0
Simon RM Pearson	1680	0 - 1
Rosamund Hale	1428	1 - 0
David Collyer	1663	0 - 1

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

1497 = (5987 + 400 * (2 - 2)) / 4)