Event: League Division 2

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Opponent	Rating	Result
Frank T Sheldrick	1693	½ - ½
Cédric Beaume	1708	0 - 1
James A Sidley	1631	1 - 0

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

1677 = (5032 + 400 * (1 - 1)) / 3)