Event: Autumn OTB Division 3

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Opponent	Rating	Result
Thomas AJ Jones	1990	0 - 1
Joel Hutchinson	1800	1 - 0
Simon J Taylor	1780	½ - ½

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

1857 = (5570 + 400 * (1 - 1)) / 3)