Event: Five Counties Div 1

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Opponent	Rating	Result
Tanmay Chopra	2404	0 - 1
Stefano Bruzzi	0	½ - ½
Darrell N Pigott	0	1 - 0
Stephen B James	0	0 - 1
Christopher Dunne	2087	0 - 1
Hassan Mugalu	0	1 - 0
Charles Lowick Higgie	0	0 - 1

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

527 = (4491 + 400 * (2 - 4)) / 7)