Event: Division 1

Opponent Rating Result
Paul S Cooksey 2358 0 - 1
Paul S Cooksey 2358 0 - 1
Mark Josse 2260 ½ - ½
Steven A Jones 2324 0 - 1
Nigel E Povah 2283 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1997 = (11583 + 400 * (0 - 4)) / 5)

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