Nassalam showed stamina in abundance to run out an ultra-impressive winner of the Coral Welsh Grand National at Chepstow.

Sent off the 9/2 joint-favourite under a 4lb penalty for winning the Welsh National Trial at the course earlier this month, Gary Moore’s six-year-old was tracking the pace set by the front-running Amateur in the early stages of what was a typically testing renewal of the marathon event.

Passing their point of departure for a second lap of Chepstow, it was only the John Flint-trained Amateur and Paul Nicholls’ Complete Unknown, scraping the paint on the inside, that were recognisable from their silks as the gruelling conditions began to take a toll.

Owned by John and Yvonne Stone, Nassalam joined Amateur midway down the back and led those left standing into the home straight for the final five fences, with Sam Thomas’ 2021 hero Iwilldoit and Complete Unknown in hot pursuit.

A blunder from Complete Unknown soon knocked the Ditcheat challenger out of contention and although Iwilldoit gamely gave chase, Nassalam was not for catching as he extended clear up the Chepstow straight.

He was 15 lengths to the good jumping two out and extended that advantage to 34 lengths as big-race jockey Caoilin Quinn added another facile triumph to Salver’s victory in the Grade 2 Finale Juvenile Hurdle only 40 minutes earlier.

Jonjo O’Neill’s Iron Bridge eventually claimed the silver medal, with Iwilldoit in third, but the afternoon belonged to the mud-loving Nassalam.

It capped an unforgettable day for Gary Moore, who had earlier won the Grade 2 Juvenile Hurdle with Salver and won the Grade 2 Desert Orchid Chase at Kempton with Editeur Du Gite.

Of Nassalam, winning jockey Caoilin Quinn said: “I winged the first and got in the ideal position just behind the leaders and I couldn’t believe how well he travelled.

“We jumped the middle one down the back and we jumped into the lead and I was kind of thinking I don’t want to be there so soon, but he was going so well – I wish I’d had a look now, I won by quite a bit. What a great performance.

“I think the ground is a big factor and I said to Gina (groom) when it was squishing on the ground, he loves this. He just seems to travel so much better on it, he properly loves the mud.

“I’m delighted, over the moon, from winning the Grade 2 the last race to this, I can’t believe it and I’m very emotional. It is all thanks to my boss and Mr and Mrs Stone for trusting me. I’ve ridden plenty of big winners for them and for them to keep me on, I’m very grateful.”