Event: Division 1

Opponent Rating Result
Mark D Crowther 2162 0 - 1
Nigel Redmond 1668 1 - 0
James Hall 2023 ½ - ½
Gerard P Killoran 1990 ½ - ½
Adam R Lang 2157 0 - 1
Richard Porter 1876 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1913 = (11876 + 400 * (1 - 2)) / 6)

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