Event: Division B

Opponent Rating Result
David E Aspinall 140 ½ - ½
H Grundy 100 1 - 0
Joss P Daune 119 1 - 0
Colin Wilks 113 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

218 = (472 + 400 * (2 - 1)) / 4)

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