Event: Division 3

Opponent Rating Result
Robert JV Davies 1717 1 - 0
Idowu Afinowi 1600 1 - 0
Ronald B Marks 1300 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1939 = (4617 + 400 * (3 - 0)) / 3)

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