Event: Division 4

Opponent Rating Result
Graham I Ladds 150 0 - 1
Robert H Willoughby 125 ½ - ½
Alexandra Arlachova 106 1 - 0
Barry T Redburn 120 ½ - ½
Richard Myers 149 1 - 0
Brian M Hayward 141 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

199 = (791 + 400 * (2 - 1)) / 6)

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