Event: Croydon Shield

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Opponent Rating Result
Jean-Baptiste Jugand 2090 0 - 1
Brendan Keenan 1995 ½ - ½
Ruairi Isaacs 1784 1 - 0
Mehmet Ali 1979 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1862 = (7848 + 400 * (1 - 2)) / 4)

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