There was a shock result in the Railway Bar Lismullen Hurdle as Joseph O'Brien's Home By The Lee outbattled Bob Olinger to oblige at 28-1 at Navan.

The winner was alongside Ashdale Bob tracking the pace early on in the contest, as dual Stayers' Hurdle champion Flooring Porter took his usual position at the head of proceedings - but looked to have a mountain to climb with a circuit to run as he drifted back through the field and traded at 1000 on the Betfair exchange.

Remarkably JJ Slevin was able to get Home By The Lee back into contention and he was one of three, alongside Bob Olinger and Ashdale Bob, to swarm upon Flooring Porter as the field entered the home straight.

As Gavin Cromwell's staying star began to beat a retreat, a mistake from Ashdale Bob saw him also back-peddling as the Grade Two contest was left to Home By The Lee and the Henry de Bromhead-trained Bob Olinger to fight out the finish.

Rachael Blackmore was still travelling strongly aboard the dual Cheltenham Festival winner as the pair approached the last with little separating them, but when push came to shove it was O'Brien's charge who pulled out more to record a two-length victory.

Assistant trainer Brendan Powell was quick to praise both the winner and his rider.

He said: "That is his strong point, staying. He's a three-miler really.

"He had fitness on his side today and a great ride from JJ. He had a nice break from Down Royal where he was unlucky there.

"The one thing he does is hit this flat spot, but JJ knows him well and you'd have to say it was nearly ride of the season so far.

"We sent him chasing and he hasn't really taken to it. He's a very decent horse on his day. Before when he ran against Flooring Porter, he was only beaten seven lengths. I said to JJ that this track will suit him if he is on their tails."

Delighted owner Sean O'Driscoll added: "This was a serious race and serious horses, no hiding place.

"My son said to me this morning, if he'd finished his race in Down Royal the last day, he'd have been a different price this morning. He was absolutely right.

"I want to thank Joseph, Brendan and all the team and Davina who looks after him and Damien Byrne - he hasn't been an easy horse. We've had to be patient with him, he has his moments.

"I thought JJ Slevin gave him a superb ride. He hits a flat spot in all his races and thankfully he hit a flat spot in the first half a mile today. JJ gave him a reminder and everyone thought he was finished, but he was only getting going."

Watch racing from Navan LIVE on RTÉ One or RTÉ Player...