Event: Open

Opponent Rating Result
Donald J Mason 2169 0 - 1
Athar Ansari 2135 ½ - ½
Henrik Stepanyan 2344 0 - 1
Matthew J Harborne 2058 ½ - ½
John E Crump 1983 1 - 0
Andrew C Southall 1914 1 - 0
Donald J Mason 2169 ½ - ½
Athar Ansari 2135 ½ - ½
Henrik Stepanyan 2344 0 - 1
Matthew J Harborne 2058 0 - 1
John E Crump 1983 1 - 0
Andrew C Southall 1914 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2101 = (25206 + 400 * (4 - 4)) / 12)

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