Big Buck’s made it 15 wins in a row over hurdles and six from seven at Cheltenham, when he took the Cleeve Hurdle on Saturday.
Paul Nicholls’ nine-year-old briefly looked in danger and Ruby Walsh had to shake him up at the top of the hill having as Dynaste kicked five lengths clear turning for home.
However, Walsh soon had matters in hand and a good jump at the last saw him move clear before quickening up the hill to score by seven lengths.
Nicholls said: “If we won today it was great, but if we lost I was the one who was going to get shot.
“Obviously I’ve left plenty to work on but I just wanted to keep him interested without murdering him at home.
“He switches off in his races. Ruby said he was going to play it late today.
“It’s quite a lot of pressure (running him). I said to (owner) Andy (Stewart) I wanted to run him and he wasn’t sure.
“He’s such a class horse, he’s get to the last, pricks his ears and goes.”
Walsh added: “Stayers shouldn’t win on the bridle, that’s why they’re stayers.
“I didn’t need to pick my stick up, there was no need.”