Event: The Friendly League

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Opponent Rating Result
Mark R Stollery 1698 0 - 1
Phil M Taylor 1870 ½ - ½
Steve J Horrocks 1916 ½ - ½
Ronnie Whiteside 0 0 - 1
Peter Thompson 0 0 - 1
Con Carey 1562 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

974 = (7046 + 400 * (0 - 3)) / 6)

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Opponent Rating Result
John Jarmany 2185 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1785 = (2185 + 400 * (0 - 1)) / 1)