Event: B Division

Opponent Rating Result
Peter J Kobryn 1960 ½ - ½
Lee P Kay 2011 0 - 1
Ondrej Chalupa 1829 1 - 0
Nathan P Butterworth 1891 ½ - ½
Viktor N Nagy 1712 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1881 = (9403 + 400 * (1 - 1)) / 5)

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