Event: Division 1

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Opponent Rating Result
Eric A Key 150 ½ - ½
David Wm Smith 119 1 - 0
Patrick Gower 182 0 - 1
Barry Marshall 152 ½ - ½
Ralph M Hewes 127 0 - 1
Simon Dixon 136 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

144 = (866 + 400 * (2 - 2)) / 6)

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Opponent Rating Result
Peter F Mason 153 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-247 = (153 + 400 * (0 - 1)) / 1)