Event: Division 1

Opponent Rating Result
Roger Fenn 0 ½ - ½
Brendan J Ruane 169 1 - 0
Nicholas H Skinner 151 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

240 = (320 + 400 * (1 - 0)) / 3)

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