Bookmakers were put to the sword as I Am Maximus rsquo; supreme Randox Grand National triumph meant the layers left Aintree licking their wounds.

It has been a chastening week for the layers in Liverpool, with a huge amount of winning favourites inflicting misery.

And that was compounded in the main event itself as Willie Mullins’ 7-1 market leader became the second consecutive winning favourite of the world’s most famous steeplechase after Corach Rambler rsquo;s success in 2023.

“It was a tough opening two days of the Aintree Festival for the bookies and the Grand National didn’t provide any respite on day three,” explained BoyleSports’ Brian O’Keeffe.

“I Am Maximus delivered a knockout blow in the big one for punters as he was one of our biggest liabilities. The placed horses weren’t kind to us either, but there’s always next year!”

It was Mullins’ second win in the Aintree showpiece and the sport’s leading trainer is no stranger to giving the bookies a bashing on the biggest stage, as I Am Maximus led home a 1-2-3-4 for Irish-trained horses.

“It was that man again Willie Mullins who so often is a thorn in our side,” said Sam Boswell from BetVictor.

“Whilst we had a significant spread of money in the race, we still ended up down thanks to the brilliant performance from his eight-year-old who had plenty of backers.

“Minella Indo, Delta Work and Kitty’s Light who all placed had plenty of each-way support too and it continued the theme of the jumps season which has been utter Irish domination in the big races.”

I Am Maximus’ victory puts Mullins in pole position to claim a first-ever UK trainers’ championship and he is now the general favourite to lift the trophy aloft at Sandown in two weeks time.

“The £1million Grand National was always likely to have a massive say in this season’s NH trainers’ title race, and of the three contenders, Willie Mullins went into the race with the strongest hand,” said Coral’s David Stevens, with the firm offering 4-5 for the master of Closutton to win the title.

“Victory for I Am Maximus has seen him claim favouritism for the championship for the first time, as the competition moves to next week’s big Ayr meeting and the £250,000 Coral Scottish National.

“The Grand National remains the biggest day in the betting calendar, and while I Am Maximus had plenty of supporters, he was one of many runners to prove popular on this unique occasion, and so we’ve no complaints about the result.”

Nicola McGeady of Ladbrokes added: “This year’s trainers’ title race is giving the Premier League race a run for its money. In what has turned into a very exciting three horse race, Willie Mullins’ Grand National victory has put him firmly in front of his rivals.”

Paul Binfield for Paddy Power said: “Around 20 seconds and Corach Rambler taking an unfortunate tumble at the first saved us over £5m.

“The winner was spotted by many punters, but despite that the bookies have had a result.”