Event: Clough (Handicap)

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Opponent Rating Result
Mick Overend 1538 1 - 0
Les Johnson 1695 1 - 0
Colin S Procter 1820 0 - 1
Daniel Dufton 1724 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1694 = (6777 + 400 * (2 - 2)) / 4)

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