Event: Division 1

Opponent Rating Result
Russell P White 2156 ½ - ½
David Spearman 2110 ½ - ½
David L Haydon 2354 0 - 1
Tamas Somogyi 2036 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2164 = (8656 + 400 * (1 - 1)) / 4)

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