Event: NSDCA Division 2

Opponent Rating Result
James Richard Hanlon 1674 1 - 0
Karl Lockett 1760 0 - 1
Lukasz Michalek 1699 0 - 1
Steve Whatmore 1877 1 - 0
Joachim Trier 1788 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1680 = (8798 + 400 * (2 - 3)) / 5)

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