Event: Division 1

Opponent Rating Result
Hambel M Willow 136 ½ - ½
John R Day 129 1 - 0
David J Barker 110 1 - 0
Peter FK Evans 89 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

416 = (464 + 400 * (3 - 0)) / 4)

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