Event: Division 3

Opponent Rating Result
Jim A Caterer 1472 0 - 1
John H Sleggs 1507 ½ - ½
Dave R Wingrove 1359 0 - 1
John CH Jones 1122 ½ - ½
Steve Martin 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

852 = (5460 + 400 * (0 - 3)) / 5)

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