Event: Division 3

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Opponent Rating Result
Louis Wigley 1601 ½ - ½
Frank Jewell 1527 ½ - ½
Simon Gathern 1684 1 - 0
Steve J Dyer 1659 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1718 = (6471 + 400 * (1 - 0)) / 4)

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