Event: Division 2

Opponent Rating Result
Feliks J Kwiatkowski 2261 0 - 1
Robert Wall 1677 0 - 1
Laurence A Butt 1887 0 - 1
Cassie M Graham 1981 0 - 1
Paul R Selby 1765 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1594 = (9571 + 400 * (0 - 4)) / 5)

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