Knappers Hill spoiled the Tom O’Brien farewell as Paul Nicholls’ charge landed the bet365 Select Hurdle at Sandown.

Tom O'Brien, who had announced he was hanging up his riding boots after a stellar career with trainer Philip Hobbs, looked to have a solid chance aboard Thyme Hill, who on official ratings had 10lb in hand on his rivals as he switched disciplines following a modest run in the Brown Advisory at the Cheltenham Festival.

And O'Brien looked well-poised as he tracked the sedate pace set by the mare Theatre Glory in the extended two-mile-five-furlong affair.

However, there was to be no fairytale farewell for O'Brien, as the race turned into something of a sprint.

O'Brien and Thyme Hill were tight for room and tapped for toe at the second-last, where Knappers Hill and Bryony Frost picked up well, having initially sat at the back of the quintet.

Frost, replacing Harry Cobden, who stood himself down following a fall earlier in the afternoon, seized her chance, with the seven-year-old, winner of the Elite Hurdle at Wincanton in November, picking up in great style.

Knappers Hill (11-2) stayed on well up the hill after the last and just had enough to repel the late thrust of Goshen, who had to be switched to challenge.

Gary Moore's runner, who was a neck behind, could be considered somewhat unlucky not to record a third course success. O'Brien bowed out with a third-place finish.

Celebrating a winner on the day he was officially crowned champion for the 14th time, Nicholls said: "We were a bit worried about the ground and we were in one mind whether to run him or not, because the only time he's been disappointing was here in the EBF Final on soft ground.

"We rode him different today and just took our time, I said to Bryony to let him creep into things and hope they don't go too quick and see if he gets the trip and he did. He'll go chasing next year, he'll be a nice type for things like the Rising Stars at Wincanton so we're looking forward to that now."

Frost added: "We just took our time. He's got so much ability and it was very easy. We cruised through in a little field and I enjoyed every moment of his jumping.

"Turning in the speed we hit was awesome, he's a quality horse and he's going to make some chaser next year. I couldn't believe it was going our way, it's probably the first race all day that has. It's fantastic for the owners and this crowd is great."