Event: Holmes Chapel Individual Championship

Opponent Rating Result
Malcolm A Roberts 1647 0 - 1
Michael L Hancock 2032 0 - 1
Ian Bates 1516 1 - 0
Michael A Lee 1713 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1527 = (6908 + 400 * (1 - 3)) / 4)

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