Trainer Chris Wall says he will only run stable star Premio Loco against Frankel in the Queen Anne Stakes next week if the ground is right.
Wall's eight-year-old is a seven-time Group winner, but he is not at his best on soft ground and will miss the opening day of Royal Ascot unless conditions improve.
"I just hope they don't get too much rain. I would like to run Premio Loco in the Queen Anne," said the Newmarket trainer.
"I know we have no hope of beating Frankel, but it would be good to have a nice day at Ascot and run well in a race with Frankel in it.
"I won't run him if it's too soft. The hope is that at least on the straight course on which the Queen Anne is run on being a new track it drains very freely on there.
"If they had three dry days with a bit of sunshine and a breeze, the ground may get to be on the good side of good to soft.
"I'd probably let the horse run, but if it was proper good to soft or softer he just can't go in it and it's a waste of time running him.
"If he didn't run we'd have to wait a bit longer. The next stop might be something like the Summer Mile at Ascot in early July.
"That would probably be his next port of call and I don't think there is anything overseas either, so we'd just have to wait."