Event: Woodhouse Cup

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Opponent	Rating	Result
Jim Burnett	2100	0 - 1
Richard O Callis	1633	0 - 1
Ronan Chan	1878	0 - 1

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

1470 = (5611 + 400 * (0 - 3)) / 3)