Event: Norman Ellis (Open)

Opponent Rating Result
Paul May 1833 0 - 1
James P Collier 1734 0 - 1
Rangarirai Ernest Karumazondo 2104 0 - 1
Paul RH Clarke 1751 ½ - ½
David L Pedro 1783 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1601 = (9205 + 400 * (0 - 3)) / 5)

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