Event: IM Brown

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Opponent	Rating	Result
Stephen Forbes	119	½ - ½
Dave Colledge	119	½ - ½
T Haskins	87	1 - 0
Gerhard Quinn	118	½ - ½
David A Patrick	160	0 - 1
David Firth	162	½ - ½
Jim R Postill	110	1 - 0

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

182 = (875 + 400 * (2 - 1)) / 7)