Grand National winner Rule The World could be retired after winning the world's most famous steeplechase at Aintree on Saturday.
The nine-year-old produced a magnificent staying performance to charge home under teenage jockey David Mullins and deny favourite the The Last Samuri on testing ground.
Outsider Rule The World was given little chance of winning given he had never passed the post first over fences and had recovered from a cracked pelvis on two occasions.
But the 33-1 shot charged home to win in impressive fashion and ensure trainer Michael 'Mouse' Morris followed up his Irish Grand National triumph last month by claiming an incredible double.
Owner Michael O'Leary, who also won the Cheltenham Gold Cup with Don Cossack in March as well as being the owner of Irish Grand National winner Rogue Angel, revealed Rule The World may end his career on what is arguably the highest possible note.
"This horse [Rule The World] could have been Gold Cup standard but for the injuries he has suffered," said O'Leary.
"He's nine now and after that we could retire him - I wouldn't want to bring him back here [at the Grand National] again, and Mouse will have to decide how he comes out of this race, but if he never runs again, who cares?
"He'll come back to Gigginstown [House Stud] one day and be retired with Don Cossack and our other good horses."
Morris also confirmed that Rule The World could have run his last race.
"He'll have a rest now and we'll discuss it with Michael and Eddie [Michael's brother] and we'll see where we go - he doesn't have to go anywhere really after this," he told At The Races.