Event: Rapid Play League

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Opponent Rating Result
Xavi Gomez Videl 1765 0 - 1
Xavi Gomez Videl 1765 0 - 1
Andy J Bagley 1946 0 - 1
Andy J Bagley 1946 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1656 = (7422 + 400 * (1 - 3)) / 4)

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