Event: Major - U1750

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Opponent	Rating	Result
Rene Butler	1465	1 - 0
John Pattinson	1707	0 - 1
Stuart Dawkins	1637	½ - ½

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

1603 = (4809 + 400 * (1 - 1)) / 3)