Event: Doncaster Bell Trophy

Opponent Rating Result
Ismet Berisha 143 ½ - ½
George D Boothman 128 1 - 0
George D Boothman 128 ½ - ½
Ismet Berisha 143 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

236 = (542 + 400 * (1 - 0)) / 4)

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