Jamie Osborne's Cesarewitch winner Never Can Tell is unlikely to take up her entry in the Gold Cup at Royal Ascot.
The five-year-old returned to action in the Chester Cup last week but could only manage eighth behind Ile De Re.
Osborne believes the two-mile-two-furlong trip on soft ground stretched her stamina and the extra quarter of a mile in the Gold Cup might not suit.
"We were concerned about running her over that trip on that ground and she clearly didn't stay," said Osborne on At The Races.
"We're just going to sit on the fence a while.
"She's in the Gold Cup but that would be highly unlikely now.
"We're more likely to run her in a handicap and if she comes down a pound, she'll be able to run in the Ascot Stakes I think.
"She's a good filly but extreme distances on soft ground are just too much for her."