Event: Woodhouse Cup

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Opponent	Rating	Result
Jonathan Round	1910	0 - 1
David C Wedge	1900	1 - 0
Mark Waterhouse	1712	1 - 0

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

1974 = (5522 + 400 * (2 - 1)) / 3)