Two-time Grand National winner Tiger Roll finished sixth on his seasonal reappearance at Navan under 16-year-old Sam Ewing.
Racing on the flat, Gordon Elliott's 10-year-old was one of nine runners in the Flower Hill Maiden.
The pair missed the break from the stalls and were always towards the rear of the field before progress late on.
It was Tiger Roll's first run since finishing second in the Cross Country Chase at March's Cheltenham Festival.
Elliott had been aiming his charge at a third Grand National in a row before the Aintree meeting was called off because of coronavirus.
However, he remains about a 12-1 favourite for the 2021 race at the Liverpool track.
Eddie O'Leary, racing manager for owners Gigginstown, was satisfied with the horse's performance:
"He missed the break, which was understandable as he hasn't been in stalls for a long time," O'Leary explained.
"He doesn't do a tap on his own. Sam was very good on him, he passed a few and he blew his head off afterwards so it was great - he needed the run.
"All going well it will either be one of the cross-country chases at Cheltenham in November or December, or the Boyne Hurdle next."
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