Event: Cotswold Open

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Opponent	Rating	Result
Nigel R Saunders	1807	0 - 1
Bob R Gore	1779	1 - 0
Mark Thomas	0	1 - 0
Stephen J Homer	1998	1 - 0
Bruce L Baer	2093	½ - ½

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

1695 = (7677 + 400 * (3 - 1)) / 5)