Event: Division 1

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Opponent Rating Result
David A Sands 2227 ½ - ½
Alexandr Pereslavtsev 2090 0 - 1
Richard G Pert 2446 0 - 1
Steven Mitchell 2031 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1999 = (8794 + 400 * (0 - 2)) / 4)

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