Event: Open County Championship

Opponent Rating Result
Christopher Hampton 1905 1 - 0
Robert R Sanders 1936 ½ - ½
Jaden Jermy 2156 0 - 1
Norman A Hutchinson 2044 1 - 0
Simon Wilks 1926 1 - 0
Ken B McEwan 2125 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2149 = (12092 + 400 * (3 - 1)) / 6)

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