Midweek racing in winter is a long way from carnival competition but trainer Peter Moody believes Il Diamante can make the progression.

The Moody-trained two-year-old filly Il Diamante heads to town for the first time in Wednesday's Equine Haven Racehorse Spelling Plate (1000m) on the back of an impressive debut victory at Cranbourne.

While Moody believes the spring might come around too soon for Il Diamante, Melbourne's premier trainer thinks the daughter of Testa Rossa could develop into a carnival-type filly next autumn.

"It's only winter form but she did all she could do the other day on debut," Moody said.

"She's still quite immature physically, but she'll be a nice three-year-old filly."

Il Diamante firmed from $2 to $1.60 at Cranbourne on June 9 and went on to score by 3-1/2 lengths in a 1000m maiden against her own age.

Moody said Il Diamante was still learning to settle but had trained on well from her first race appearance.

"It would have been nice if this race was 1100 metres, but still at 1000 metres she should be competitive," Moody said.

"She might have another couple of runs or this could be it for this preparation. I'm open minded at this stage."

The Sandown track was rated in the heavy range on Tuesday which shouldn't hold any fears for Il Diamante who won in the same going on debut.

Her rivals include the Mick Price-trained Tango's Daughter who scored by more than four lengths first-up on Geelong's synthetic track on June 6.

Tango's Daughter, who was spelled after failing in the Blue Diamond Preview on debut in January, finished a nose ahead of Il Diamante in a Cranbourne trial a month ago.

The Price-trained filly will be ridden by Craig Newitt who will be back in Melbourne after partnering Shamexpress to an unplaced finish in the Group One King's Stand Stakes at Royal Ascot last week.