It seems the more she wins the easier it gets for Winx but the harder it is for her trainer.

The mare made light work of the heaviest track possible in her defence of the Group One George Ryder Stakes at Rosehill on Saturday, while Chris Waller watched in awe like everyone else as she claimed her 11th Group One win and 16th successive victory.

There were suggestions she could be vulnerable over 1500 metres with Chautauqua and Le Romain given some support in the lead-up.

But the 7-1/4 lengths she put on runner-up Le Romain told a different story.

Waller watched the race away from the crowd which cheered her home and quietly shook his head.

"She is unbelievable," Waller said.

"I can't explain it. We try to do our part to make sure she is ready on the day.

"It's a huge responsibility and one we take seriously."

Winx was at $1.15 early in the week but jumped at $1.26 with Chautauqua $9 and Le Romain $10.

Having his first start at 1500 metres, champion sprinter Chautauqua finished 1-1/4 lengths behind Le Romain as the two struggled to make any impression in the straight as Winx set sail for home.

The champion's jockey Hugh Bowman is among her biggest fans.

"She's just so special. I'm at a loss to explain it," Bowman said.

"There is a great deal of responsibility to be involved with her but with that comes a great deal of confidence.

"My only worry is am I going to get on her, canter to the gates one day and feel that engine just isn't there."

Winx will head to the $4 million Queen Elizabeth Stakes on April 8 at Randwick while it is back to the drawing board for Chautauqua's connections who had hoped for a performance good enough to try him over 1600 metres in the Doncaster Mile.

"He won't be going to the Doncaster," senior trainer John Hawkes said.

"If he comes through all right we'll look at the options but he could also go to the paddock."

Chautauqua's jockey Tommy Berry was forgiving.

"He probably got a bit keen because they didn't go that quick," he said.

"I was never in the race at the top of the straight but once he got to about the 250 metres he really knuckled down.

"But the race was over and done with by the time he warmed up. I think he will be better back to sprint trips as well.

Le Romain, who nosed Chautauqua out of the Canterbury Stakes last start, is headed to the Doncaster and is the $6 favourite while Winx is at $1.15 to round off her autumn campaign in the Queen Elizabeth Stakes.

Glyn Schofield said Le Romain had proved himself against all but Winx.

"He ran a super race," he said.

"He put a margin on Chautauqua who was close to him last start so it was an improved performance today but unfortunately not good enough to beat her."