Event: Division 4

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Opponent Rating Result
Artur Levashov 0 0 - 1
David Selden 1251 1 - 0
John Cleland 1539 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

797 = (2790 + 400 * (1 - 2)) / 3)

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