Event: Woodhouse Cup

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Opponent	Rating	Result
David Harasym	1798	½ - ½
Robert A Dean	1823	0 - 1
A Jon Griffith	1780	½ - ½

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

1667 = (5401 + 400 * (0 - 1)) / 3)