Event: R Division

Opponent Rating Result
Svetlana Popova 1000 1 - 0
Jack Gladwin 1100 0 - 1
Svetlana Popova 1000 1 - 0
Jack Gladwin 1100 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1050 = (4200 + 400 * (2 - 2)) / 4)

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