Event: Division 1

Opponent Rating Result
Peter Kirby 2054 1 - 0
Daniel M Lambourne 2077 ½ - ½
Robert Ashworth 1954 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2162 = (6085 + 400 * (1 - 0)) / 3)

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