Event: 2nd Yorkshire Rapidplay Championships - Major

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Opponent	Rating	Result
Charlie Wainwright	1631	1 - 0
Nathan Madzia	1859	0 - 1
Jack Booker	1484	0 - 1
Bien Cuaresma	1680	1 - 0
Matthew R Wilson	1692	½ - ½
Dale H Cullum	1753	½ - ½
David Robinson	1666	0 - 1

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

1624 = (11765 + 400 * (2 - 3)) / 7)