Event: Div1

Opponent Rating Result
John Molyneux 199 0 - 1
Daniel JS Sullivan 167 ½ - ½
John E Shannon 182 ½ - ½
John Molyneux 199 1 - 0
Peter JE Ackley 187 ½ - ½
Ray J Forey 170 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

117 = (1104 + 400 * (1 - 2)) / 6)

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