Event: Division Two

Opponent Rating Result
Eugene Gregorio 1730 ½ - ½
Graham P Alcock 1832 ½ - ½
Majid Mashayekh 1873 ½ - ½
Pablo Soriano 1774 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1702 = (7209 + 400 * (0 - 1)) / 4)

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