Event: Division 2

Opponent Rating Result
Paul J Colburn 2019 0 - 1
Keith R Ingram 1844 1 - 0
David J Ireland 1962 ½ - ½
Mal Waddell 1861 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2022 = (7686 + 400 * (2 - 1)) / 4)

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