Event: Division 2

Opponent Rating Result
Volodymyr Mylovanov 1900 0 - 1
Thomas West 1715 ½ - ½
Daniel Seaton 1763 0 - 1
Volodymyr Mylovanov 1900 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1520 = (7278 + 400 * (0 - 3)) / 4)

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