All Too Hard is an odds-on favourite to return a winner at Rosehill on Saturday but trainer Gerald Ryan isn't scared to be taking him on with Golden Slipper runner-up Snitzerland.

All Too Hard, a half-brother to champion Black Caviar, was nominated for two races in Sydney and one in Melbourne but he will line up in the Group Three San Domenico Stakes (1100m) against just five rivals.

Ryan said All Too Hard's presence hadn't changed his thinking on the race and pointed to some advice given by Hall Of Fame trainer, the late Colin Hayes.

"Colin Hayes always said never to be frightened about one horse," Ryan said.

"If your horse is fit and well you shouldn't be afraid of just one horse."

The Rosehill trainer added it was another runner that he believes might sneak under the radar in the San Domenico.

"I think Driefontein is the forgotten horse in the race personally," Ryan said.

"She's got great form."

All Too Hard was installed at $1.55 with TAB Sportsbet ahead of Snitzerland at $3.20 with Magic Millions winner Driefontein at $6.

Snitzerland won a recent 900m barrier trial at Rosehill with the highly-rated All Too Hard cruising home from back in the field to finish second in the same heat.

"She has done well since her trial and it has brought her on," Ryan said.

"She's not screwed right down for this but she will still run well.

"She's as forward as she was when she won first-up at Mornington last preparation."

All Too Hard's co-trainer Michael Hawkes said the decision to start the colt in the San Domenico, rather than the Starlight Stakes against older horses, was made by his father and fellow co-trainer John Hawkes on Wednesday morning.

"It's a small field, a compact field and probably field size had a little bit to do with it," Michael Hawkes said.

"But we've shown in the past that we are not afraid to take on the older horses with a quality three-year-old.

"He's got his share of weight with 59 kilograms (in the San Domenico) but he's a big, strong colt and he'll be able to carry it."

The Listed Starlight Stakes attracted nine acceptors with Satin Shoes the early favourite.