Guy Walter has prepared many good staying fillies but will be out to claim his first Vinery Stud Storm Queen Stakes with Slapstick.The Warwick Farm-based horseman has won two Group One AJC Australian Oaks (2400m), four Adrian Knox Stakes (2000m) and three Keith Nolan Classics (1600m) but is yet to train the winner of the Saturday's 2000m fillies race at Rosehill.In Slapstick, the last start Group Three Keith Nolan Classic winner, he believes he has a progressive filly ready for her biggest test

Guy Walter has prepared many good staying fillies but will be out to claim his first Vinery Stud Storm Queen Stakes with Slapstick.

The Warwick Farm-based horseman has won two Group One AJC Australian Oaks (2400m), four Adrian Knox Stakes (2000m) and three Keith Nolan Classics (1600m) but is yet to train the winner of the Saturday's 2000m fillies race at Rosehill.

In Slapstick, the last start Group Three Keith Nolan Classic winner, he believes he has a progressive filly ready for her biggest test to date.

"It was terrific to win at Kembla (in the Keith Nolan) last start, we were pleased to see her make that step in grade," Walter said.

"She has got another step to make on Saturday, not only going to a Group One but also going to 2000 metres for the first time.

"However, it's against her own age and sex, she's in good form and is very fit."

Walter said the plan was to progress to the Group One AJC Australian Oaks (2400m) at Randwick on April 17 provided the filly ran well in the Storm Queen.

Slapstick showed she was a filly on the way up by holding on for a narrow victory in the Keith Nolan (1600m) at Kembla on March 21.

Walter used that race as a measuring stick for the filly's autumn prospects and victory ensured she was given her chance to tackle Group One company this week.

The three-year-old has progressed nicely since her breakthrough stakes victory last time out.

"I thought her win was very good. She handled the class rise, the rise in distance and showed a bit of a turn of foot, too," he said.

The major question mark with many of the fillies will be how they handle the 2000 metres, particularly on what is expected to be a rain affected surface.

Walter is just one trainer not quite sure how his filly will handle the conditions.

"She has performed all right in the wet before," he said.

"She hasn't won in it, but she also hasn't shown a dislike for it."

The Storm Queen has attracted a strong field of staying fillies including the VRC Oaks winner Faint Perfume and runner-up Valdemoro.

Australasian Oaks winner Small Minds is also engaged, as is the highly regarded Run For Naara who has competed admirably against the colts and geldings in both the Randwick Guineas and Rosehill Guineas in recent weeks.

In-form jockey Michael Rodd was aboard Slapstick last start but he will continue his association with the Bart Cummings-trained Faint Perfume in the Storm Queen.

Glen Boss, who was successful in getting a careless riding suspension reduced on appeal on Thursday, will pilot Slapstick for the first time.