Event: Bedfordshire Individual Championship

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Opponent	Rating	Result
Richard McMorran	1678	1 - 0
Qais Karimi	1924	0 - 1
Adrian MS Matthews	1830	½ - ½
Michael Page	1530	1 - 0
Kevin J Williamson	1964	1 - 0
Brian J Valentine	1931	1 - 0

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

2010 = (10857 + 400 * (4 - 1)) / 6)