Event: Max 560

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Opponent Rating Result
Robert Glass 160 ½ - ½
Raymond Carpenter 162 0 - 1
Andy Ambrose 145 1 - 0
John F Fahy 152 1 - 0
Phil Bull 157 0 - 1
Luke Boynton 174 0 - 1
Robert Glass 160 ½ - ½
Raymond Carpenter 162 1 - 0
Andy Ambrose 145 1 - 0
John F Fahy 152 ½ - ½
Phil Bull 157 0 - 1
Luke Boynton 174 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

158 = (1900 + 400 * (4 - 4)) / 12)

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