Event: 6-Board Division 2

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Opponent	Rating	Result
Keith Thompson	162	½ - ½
John Scotter	120	½ - ½
Joseph Catto	100	1 - 0
Ian Scott	113	½ - ½
Richard O Callis	139	1 - 0
Dave M Cooper	121	1 - 0
David J Hambly	1825	0 - 1

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

483 = (2580 + 400 * (3 - 1)) / 7)