Event: Richard Furness(500) League

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Opponent	Rating	Result
Vincent Shanahan	1650	1 - 0
Nigel Holland	1540	1 - 0
Stephen Deakin	1650	1 - 0
Bryan Slater	1550	0 - 1
Andy Laurence Coe	1818	0 - 1
Ilya Dubov	1650	0 - 1
Anthony Oldham	1405	½ - ½

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

1609 = (11263 + 400 * (3 - 3)) / 7)