Event: 7th Peter & Peggy Clarke Memorial

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Opponent	Rating	Result
Paul A Aston	1868	0 - 1
Salli Gosling	1757	1 - 0
Trefor F Thynne	1876	½ - ½
Freddie Sugden	1727	1 - 0
Peter J Worthington	1666	1 - 0
John DM Nunn	2551	0 - 1
Jack Wills	1651	½ - ½

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

1928 = (13096 + 400 * (3 - 2)) / 7)