Craig Newitt predicted a bright future for Dupe' em after the two-year-old scored an impressive debut victory at Sandown, forming part of a two-state juvenile double for trainer Chris Waller.

The son of Duporth had shown Newitt and Waller's Melbourne stable representative Justine Hales plenty of talent on the training track and he backed that up in Wednesday's Equiano - King Of Speed Handicap.

His win came shortly before stablemate Good Project took out a two-year-old race at Warwick Farm in Sydney.

"I think his best trip will probably be 1400 metres or even a mile and the thing about him is all he wants to do is please you," Newitt said.

"He just does everything right. I have ridden him half a dozen times now and I haven't found a fault with him yet."

Dupe 'em, sent out a $14 chance, came from off the speed in the 900m scamper and sprinted clear to win by half a length over Bulls 'n' Bears ($10) with another 1-1/4 lengths to Fontein Ruby ($5.50) third.

"The 900 metres was the only query, whether they ran him off his legs or not," Newitt said.

"They did, but he's got the brain of a three-year-old and didn't lose concentration being off the bridle. He hit the line super."

Hales said there was no set plan for Dupe 'em but expected he would progress to Saturday class next and possibly into the spring.

Sydney's premier trainer, Waller has increased his presence in Victorian racing in the past year after opening a stable at Flemington.

Dupe 'em was his first juvenile winner in Melbourne.

Meanwhile, Katelyn Mallyon hit the front in the metropolitan apprentices' premiership with victory on the Troy Corstens-trained Sarawak in the Yellowglen Plate (1600m).

Mallyon's 26th city win for the season took her one clear of Harry Coffey in a close title race as she strives to win the apprentices' premiership for a second time after claiming the honour two seasons ago.

Stewards suspended Noel Callow for 10 meetings after he pleaded guilty to careless riding aboard Diamond Jim in the Grand Hotel Frankston Handicap (2400m).