Event: A Division

Opponent Rating Result
Michael J Creaney 140 1 - 0
Andrew Killick 155 1 - 0
Brian Ellis 155 1 - 0
Peter Ridsdale 155 ½ - ½
Brian Whitaker 107 1 - 0
Stephen W MacCormack 146 1 - 0
Kevin M Waterman 118 0 - 1
Richard J Harris 140 0 - 1
Ernest J Lazenby 149 ½ - ½
Steven B Booth 140 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

261 = (1405 + 400 * (5 - 2)) / 10)

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