Event: Worcestershire Challengers' League

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Opponent Rating Result
Scott Russell 1769 0 - 1
Robert Davies 1744 1 - 0
Phil Maddocks 1782 ½ - ½
Steve Alcock 1479 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1794 = (6774 + 400 * (2 - 1)) / 4)

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