Event: Online League Division 1 (Spring 2021)

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Opponent	Rating	Result
John M Quinn	2222	0 - 1
Tom Townsend	1837	1 - 0
Asad Rahman	2082	0 - 1
Ian N Heppell	1956	0 - 1
John D Wager	2023	1 - 0
Krrish Patel	1604	1 - 0
Christopher Tombolis	2114	½ - ½

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

1977 = (13838 + 400 * (3 - 3)) / 7)