Event: League Division One

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Opponent	Rating	Result
Paul ER Badger	1858	0 - 1
Tom Brown	2016	½ - ½
George Harman	1887	½ - ½

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

1787 = (5761 + 400 * (0 - 1)) / 3)