Event: Division 6

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Opponent Rating Result
Adrian Howells 60 1 - 0
Simon Haas 50 0 - 1
Pawel Stanny 50 0 - 1
Roisin Dasanayake 20 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

45 = (180 + 400 * (2 - 2)) / 4)

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