Event: B Division

Opponent Rating Result
Robert Donner 1652 0 - 1
Aryan Nalawade 1450 0 - 1
Ray Pallister 1601 0 - 1
Peter R Archer 1479 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1346 = (6182 + 400 * (1 - 3)) / 4)

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