Event: Dons Club Challengers

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Opponent Rating Result
Colin R Payne 1695 1 - 0
Andrew S Pandian 1602 1 - 0
David E Hall 1885 1 - 0
Biran S Shah 1795 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2044 = (6977 + 400 * (3 - 0)) / 4)

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