Event: Autumn OTB Division 1

Opponent Rating Result
Joao Rita 2013 ½ - ½
Nicholas MS Barnaby 1975 ½ - ½
James A Murphy 1880 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2089 = (5868 + 400 * (1 - 0)) / 3)

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