Event: Gambit Rapidplay

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Opponent	Rating	Result
Freddie Vesey	1559	0 - 1
Freddie Vesey	1559	0 - 1
Andy While	1500	1 - 0
Andy While	1500	0 - 1
John R Huthwaite	1825	1 - 0
John R Huthwaite	1825	0 - 1
Leo Beacroft	1502
Leo Beacroft	1502
Albert Biermann	879
Albert Biermann	879

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

1495 = (9768 + 400 * (2 - 4)) / 6)