Event: Autumn OTB Division 2

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Opponent	Rating	Result
Andrew I Wilson	1900	0 - 1
Dave S Almond	1713	½ - ½
Karl Moorcroft	1698	1 - 0

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

1770 = (5311 + 400 * (1 - 1)) / 3)