Nassalam capped an afternoon to remember for trainer Gary Moore when showing stamina in abundance to run out an ultra-impressive winner of the Coral Welsh Grand National at Chepstow.

Some 4lb well-in under a penalty for winning the Welsh National Trial at the course earlier this month, the 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 two 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 who was introduced at 25-1 by both Paddy Power and Betfair for the Randox Grand National at Aintree.