Event: Division 2

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Opponent Rating Result
Louis-Roman Jornod 1300 1 - 0
Muhammad Faheem 1578 0 - 1
Joe Crossley 1500 ½ - ½
David Harrington 1500 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1570 = (5878 + 400 * (2 - 1)) / 4)

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