Event: 54th Cotswold Open

Opponent Rating Result
Bao Nghia Dong 2327 0 - 1
Robert M Ashworth 1944 ½ - ½
Yiwen Ding 1716 ½ - ½
Zack Norris 1961 1 - 0
Stephen P Dilleigh 2052 ½ - ½
Richard CP Freeman 1939 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1990 = (11939 + 400 * (1 - 1)) / 6)

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