Event: Division 1

Opponent Rating Result
Thomas B Bonn 2260 0 - 1
Nevil Chan 1977 1 - 0
Steven F Coles 2092 ½ - ½
Meet Shah 1961 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2173 = (8290 + 400 * (2 - 1)) / 4)

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