Event: January Rapidplay

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Opponent Rating Result
James Turner 1924 0 - 1
Alan Welsh 1785 0 - 1
Jose Grueso 1698 0 - 1
John G Horton 1683 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1373 = (7090 + 400 * (0 - 4)) / 4)

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