Event: 54th Cotswold Open

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Opponent	Rating	Result
Stephen P Dilleigh	2052	1 - 0
David J Spence	2307	0 - 1
Lee Davis	2026	0 - 1
Robert Frost	0	0 - 1
Adithya Vaidyanathan	2118	0 - 1
Joshua McKenna	1696	1 - 0
Julian D Llewellyn	1882	1 - 0

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

1669 = (12081 + 400 * (3 - 4)) / 7)