Event: Division One

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Opponent Rating Result
Sean Ralph 162 ½ - ½
David R Thomas 161 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

162 = (323 + 400 * (0 - 0)) / 2)

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Opponent Rating Result
Amrik J Singh 166 ½ - ½
Jonathan Dale 164 0 - 1
Mike Hadley 160 ½ - ½
Nick W Roberts 157 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

62 = (647 + 400 * (0 - 1)) / 4)

Opponent Rating Result
David Jeffs 139 ½ - ½
Derek Backhouse 146 ½ - ½
Mike P Maher 149 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

278 = (434 + 400 * (1 - 0)) / 3)