Event: Division 3

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Opponent Rating Result
Peter Newton 1640 0 - 1
Piotr Wasilak 1750 0 - 1
Alan Wadsworth 1740 0 - 1
Hugo Smith 1450 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1445 = (6580 + 400 * (1 - 3)) / 4)

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