Event: County Championship

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Opponent Rating Result
Jason M Dilley 0 0 - 1
Eric Gibbon 0 1 - 0
Martin Pettinger 0 1 - 0
Raymond J Ilett 0 0 - 1
Joe Kilshaw 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

0 = (0 + 400 * (2 - 2)) / 5)

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