Event: Division 2

Opponent Rating Result
William Hastings 1500 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1900 = (1500 + 400 * (1 - 0)) / 1)

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Opponent Rating Result
Alan Reynolds 1527 1 - 0
Kyriakos Chovardas 1679 0 - 1
Robert Petrovai 1645 0 - 1
Kenneth J Butcher 1657 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1427 = (6508 + 400 * (1 - 3)) / 4)