Event: Open County Championship

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Opponent	Rating	Result
Sam AC Herring	2007	0 - 1
Benjamin PQ Collinson	2072	1 - 0
Eoin Tweeddale	2122	½ - ½
Szymon C Palucha	2154	½ - ½
Ken B McEwan	2172	0 - 1
James Gardner	2023	1 - 0

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

2092 = (12550 + 400 * (2 - 2)) / 6)