Event: Baum Trophy summer league

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Opponent Rating Result
Jeff A Goldberg 2123 ½ - ½
Jeff A Goldberg 2123 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2123 = (4246 + 400 * (0 - 0)) / 2)

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Opponent Rating Result
Neville H Twitchell 1850 ½ - ½
Costas Karayiannis 2179 0 - 1
Neville H Twitchell 1850 1 - 0
Costas Karayiannis 2179 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2115 = (8058 + 400 * (2 - 1)) / 4)