Event: IM Brown

Opponent Rating Result
Joseph Catto 1769 0 - 1
Neil Griffiths 1616 1 - 0
Malcolm E Corbett 1796 ½ - ½
Alec Ward 1706 0 - 1
David L Pedro 1780 0 - 1
Brian Ward 1260 1 - 0
John R Mercy 1796 ½ - ½
Paul W Jones 1637 1 - 0
Paul Butterworth 1789 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1639 = (15149 + 400 * (3 - 4)) / 9)

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