Kieren Fallon is unlikely to have everything in his favour at Epsom as he admits his possible Investec Derby and Oaks hopes need vastly differing conditions to show their best.

His likely Derby mount True Story failed to sparkle when only third in the Dante Stakes on easy ground at York last week.

Sent off the odds-on favourite following a Newmarket Listed win, the Godolphin colt was beaten a length and a half and Fallon is now hoping for quicker ground at Epsom on June 7.

"The key to him is the ground, we knew that all along but we had to get him somewhere," Fallon told At The Races.

"It was his first day away from home, first time in a box away, he came there to win his race but couldn't get hold of the ground.

"God willing it will be good, fast ground at Epsom and that will be right up his street.

"He handled the preliminaries well at York and that can be a test. The Dante is always the best trial and he's come out of his race well, eaten up and it's all systems go."

Madam Chiang staked her Oaks claim when maintaining her unbeaten record in the Musidora Stakes, thriving on the soft ground to add to her previous success at Yarmouth last October.

David Simcock, who trains the filly for owner/breeder Kirsten Rausing, was keen to point out afterwards that she would not run at Epsom unless the ground was suitable.

"She's a beautiful filly bred by Mrs Rausing so she'll be hoping she goes on to better things," said Fallon.

"She hasn't started badly with a brace under her belt. She appreciates soft ground so that will be the key to where she goes I would think.

"I don't think she'll have any problems with the track, she handles herself well.

"She doesn't do much at home, she's very laid back, usually these types go on to be better."