Event: Div1

Opponent Rating Result
Mike Alcock 168 1 - 0
Sohrab Panday 169 1 - 0
Glenn Halfpenny 173 0 - 1
Ian S Kingston 178 0 - 1
Steve Bracey 156 1 - 0
Simon N Gilmore 188 1 - 0
Peter JE Ackley 189 ½ - ½
Sohrab Panday 165 ½ - ½
John E Shannon 181 ½ - ½
Peter M Collins 158 ½ - ½
Daniel JS Sullivan 167 0 - 1
Alan F Downham 172 ½ - ½
David Williams 165 ½ - ½
Derek A Jarvis 171 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

171 = (2400 + 400 * (4 - 4)) / 14)

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