Event: Online Division 1

Opponent Rating Result
Mehmet N Altinsoy 2018 ½ - ½
Mark A Keady 1852 1 - 0
Francis P Best 1833 1 - 0
Francis P Best 1830 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2183 = (7533 + 400 * (3 - 0)) / 4)

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