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http://www.sportinglife.com/racing/n...9.html&BID=465

Legendary stayer Big Buck's will face six rivals as he bids to stretch his unbeaten run over timber to 14 in the Lough Derg Long Walk Hurdle at Ascot on Saturday.

Big Buck's has won the last two renewals of the Long Walk, but they have both been run at Newbury.

David Pipe would love nothing better than to claim the race named in honour of one of his former stable stars and saddles Dynaste.

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Professional Jockeys Association chief executive Kevin Darley has warned riders to be careful of the company they keep in the wake of the latest corruption scandal to engulf the sport.

"It's disappointing for the sport," said Darley, who was a jockey for 30 years and won Group One races all over the world, including the St Leger.

He said: "Jockeys are very personable people, when they walk to the paddock they are exposed to everybody and you can literally be talking to anybody and everybody.

"Ever since the betting exchanges have been around, punters and the general public can bet on a horse to lose, which is something that is quite new to our sport and jockeys have to be wary of anyone who is trying to seek negative information."

"Obviously it doesn't look great, but day-to-day punters know the score and recognise that the vast majority of the sport is clean," said George Primarolo, spokesman for Betfred, who recently took over the Tote.