Event: Division 4

Opponent Rating Result
Derek W Hadley 1596 ½ - ½
Nadim Osseiran 1265 1 - 0
Michael Krautzberger 1529 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1730 = (4390 + 400 * (2 - 0)) / 3)

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