Event: Division 3

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Opponent Rating Result
Andrew P Sutton 134 ½ - ½
Keith W Roper 137 0 - 1
Gary M Hopkinson 120 1 - 0
Liam Connolly 95 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

122 = (486 + 400 * (1 - 1)) / 4)

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