Event: Open County Championship

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Opponent	Rating	Result
Graham E Borrowdale	2011	½ - ½
Philip R Bonafont	2078	1 - 0
Piotr Wasilak	1952	1 - 0
Graham E Borrowdale	2011	0 - 1
Geoffrey R Moore	2120	0 - 1
Robert R Sanders	1936	1 - 0

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

2085 = (12108 + 400 * (3 - 2)) / 6)