Event: Division Two

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Opponent Rating Result
Daniel Seaton 1752 0 - 1
Alexander Sobolev 0 1 - 0
Daniel Seaton 1674 0 - 1
David J Skyrme 1442 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1017 = (4868 + 400 * (1 - 3)) / 4)

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