Synchronised chasing historic National glory
Synchronised remains favourite to defy history and become the first horse since Golden Miller in 1934 to add the Aintree Grand National to his Cheltenham Gold Cup victory in the same season.
The nine-year-old is 6/1 favourite with Ladbrokes to complete a landmark double for owner JP McManus, trainer Jonjo O'Neill and champion jockey Tony McCoy, who took Aintree glory with Don't Push It in 2010.
Synchronised has the extra burden of carrying top-weight of 11st 10lb after a maximum field of 40 were declared for the four-and-a-half-mile spectacular.
All the other leading fancies are in the final line-up, including last year's Donald McCain-trained winner Ballabriggs, which will attempt to become the first horse to land back-to-back victories in the world's greatest steeplechase since Red Rum, which was trained by McCain's father Ginger, in 1973 and '74.
On His Own, the mount of Ruby Walsh, heads Willie Mullins' team while Ruby's sister Katie will be aboard Seabass for their father, Ted Walsh.
Nina Carberry, who is also bidding to become the first female rider to win the race, will be aboard Organisedconfusion for her uncle, Arthur Moore.
Among the other major contenders are Giles Cross, West End Rocker, Junior, Cappa Bleu, Chicago Grey and Killyglen.
Le Beau Bai has been withdrawn and connections had warned earlier in the week the ground may not be soft enough for the Welsh National winner, which was a top-priced 40/1.
Always Waining, which runs in today's Topham Chase instead, was the only other defector from the 47 qualified five-day entries. That means Hello Bud and Neptune Equester can now take their chances.