Event: Division 2

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Opponent Rating Result
Tommy Wilkins 1770 0 - 1
Haroon Majeed 2039 0 - 1
Andrew Penn 1776 ½ - ½
Andy Hill 1979 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1691 = (7564 + 400 * (0 - 2)) / 4)

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