Event: Division One

Opponent Rating Result
Dimiter Daskalov 228 0 - 1
Ian S Kingston 178 1 - 0
Emil Angelov 190 ½ - ½
Lee A Grinsell 181 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

194 = (777 + 400 * (1 - 1)) / 4)

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