Roger Varian reiterated the ground must be suitable for Ladbrokes St Leger favourite Kingston Hill to take his chance in the Classic on Saturday.
The Derby runner-up has drifted in the betting as the sun has continued to beat down on Town Moor for the first two days of the meeting, with connections of the colt warning that the going must be in his favour if he is to participate.
Although there is no further rain forecast, Varian is hoping the ground does not get any quicker over the next two days.
Speaking from Doncaster on Thursday afternoon, the Newmarket handler said: "I'm not going to be here (on Friday) as I haven't got a runner.
"I'll be here on Saturday and nothing's changed. If I'm happy with the ground conditions, I'll run and if I'm not, I won't.
"I've spoken to Roderick (Duncan, clerk of the course) and he knows my position. It will either be good enough for me to run or it won't.
"I'll walk the course and if I'm happy, we're going to run. I've said we're participating on good ground.
"We want to run - the likelihood is we're going to run - but we want to be running on decent ground.
"If I'm happy with the ground I'll run. I can't be more clear than that.
"I'll be here on Saturday and let's hope we're here competing."
Asked about watering ahead of Saturday's fixture, Duncan said: "I'll rule nothing out, but I'm not planning to at the moment.
"There are 14 runners in the race (St Leger). I would love to see Roger Varian win the race, he won the Racing Post Trophy and I believe if he (Kingston Hill) runs he will win.
"I want to see the favourite run, but I don't want to see a load of other people not running because I've watered. There's not just one race on. There's a lot of horses running and if I adopt a policy that nobody else wants in favour of one horse, it's an impossible position.
"I'm not being leaned on or being put under any pressure to water."
Kingston Hill will face 13 rivals in the world's oldest Classic - if he runs.
John Gosden has a terrific record in the race and has three contenders.
William Buick has chosen Derby third Romsdal, with Frankie Dettori on Forever Now and the Robert Havlin-ridden Marzocco making up the team.
Mark Johnston has three chances in Alex My Boy, Eclipse third Somewhat and Royal Ascot winner Hartnell, the pick of stable jockey Joe Fanning.
Michael Stoute runs two, headed by Great Voltigeur runner-up Snow Sky, who will be ridden by James Doyle and Kings Fete, who won a York handicap earlier in the year and will have the assistance of Ryan Moore.
Richard Hannon looks for another Classic with Windshear, while Aidan O'Brien relies solely upon Granddukeoftuscany, who will be ridden by Colm O'Donoghue..
Odeon, Scotland and Min Alemarat complete the field.
