Event: West of England Counties Online Championship

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Opponent	Rating	Result
Fenella Headlong	1200	½ - ½
Chris TJ McKinley	1824	1 - 0
Grant Healey	1853	1 - 0
Stephen J Homer	1972	1 - 0

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

2012 = (6849 + 400 * (3 - 0)) / 4)