Josh Parr might just be the first jockey at Rosehill on Saturday.

Parr had a "nightmare" run getting to Randwick last Saturday but arrived in the nick of time to win the Gimcrack Stakes in his only ride for the day.

That was for Peter Moody and Parr teams with Melbourne's premier trainer again in the opener at Rosehill with another two-year-old in Crime Fighter.

"I'll be there at 8am," Parr joked.

"It was a nightmare last week and I didn't think I was going to get there, but I just made it in time.

"It was terrific (winning on Brilliant Bisc) and hopefully this week I've got the right sort of colt to perform again."

With some decent chances on Saturday including Free Wheeling and Complicate for Peter Snowden, and with a number of high-profile jockeys in Melbourne, Parr is hoping to re-establish his credentials as a metropolitan-class rider.

"This game seems to be all about momentum. I had three months off from November last year (with a back injury) and since then I haven't been able to gain a lot of momentum," he said.

"It's been a very quiet 12 months and I'm as competitive as anyone so when you're not riding winners it gets frustrating.

"If I can have a good day tomorrow on the back of last week, hopefully I can start building some momentum."

Three-year-old Complicate is a $2.60 favourite in the second event while stablemate Free Wheeling is on the second line of betting for his return in the Tooheys New Twin Willows Handicap (1350m).

Parr has ridden the talented Free Wheeling three times in races but not since the Phar Lap Stakes in March.

"I got a look at him yesterday morning at the track and I think it's the most forward he's looked for a first-up run which is great for me, being on him tomorrow," Parr said.

"I just don't want too much rain for him."

Rain, however, won't faze New Zealand mare Fromelles who Parr will partner in the feature race on the program, the Listed Angst Stakes (1500m).

The six-year-old staying-type is first-up for trans-Tasman trainer John Sargeant who has a satellite stable at Warwick Farm.

Parr got a feel for the mare in trackwork on Thursday.

"I think she can run a sneaky race if the track is wet," he said.