Event: Div4

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Opponent Rating Result
John Challenor 114 0 - 1
Alan Holden 111 ½ - ½
R Arthur Hall 109 0 - 1
Danny Torbica 95 1 - 0
Alan Holden 111 ½ - ½
Roy K Smith 79 1 - 0
John Moughtin-Leay 74 1 - 0
Shah Hussain 113 1 - 0
Stuart Smitton 67 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

230 = (873 + 400 * (5 - 2)) / 9)

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