Event: Woodhouse Cup

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Opponent	Rating	Result
Roger W Jennings	179	½ - ½
Jeff N Spratt	171	0 - 1
Ihor Lewyk	183	0 - 1

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

-89 = (533 + 400 * (0 - 2)) / 3)