Event: Woodhouse Cup

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Opponent	Rating	Result
Mike R Stokes	1953	0 - 1
Ihor Lewyk	2091	0 - 1
Eric D Gardiner	1925	½ - ½

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

1723 = (5969 + 400 * (0 - 2)) / 3)