Event: Division 4

Opponent Rating Result
Keith W Roper 1766 1 - 0
Vanorld Vanderpuye 1075 ½ - ½
Tomasz D Adamski 1730 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1524 = (4571 + 400 * (1 - 1)) / 3)

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