John Sadler can't remember having a Thousand Guineas runner in his long training career but he is hoping Mozzie Monster can confirm a booking in next month's event with a win at Caulfield.

Mozzie Monster will be trying to protect her undefeated record when she lines up in the Listed Jim Moloney Stakes (1400 metres) on Saturday.

So far the three-year-old daughter of Sebring has been successful at Cranbourne and Bendigo, winning both races easily.

Sadler is exuding confidence with the filly saying she has what it takes to be a topliner.

"I'm aware she hasn't beaten anything of note but I think she can win and win well on Saturday," Sadler said.

"She has the right attributes of a good filly. She's got a great character and she's very relaxed.

"In her races, she absolutely switches right off and then goes forward when needed and gains momentum quickly.

"She can handle all tracks. She won her first start on a heavy track and her next one was on a good three."

Sadler said Mozzie Monster would need to win the Jim Moloney Stakes impressively if she was to take on the upper echelon of fillies in the Thousand Guineas.

As for her name, Sadler credits owner David Digney, who named her after one of his mates in the Cronulla area of Sydney.

"He's named after 'Moz' who is a physical education teacher who is a giant of a man who loves a beer and is known as a great bloke," Sadler said.

Sadler said Digney was a passionate Richmond supporter and that's why her colours were that of a Tiger's jumper.

"It looks like he could be in for a big month in October," he said.

Sadler said Mozzie Monster was initially trained in Queensland by Wayne Nugent but after four or five weeks of pre-training he told Digney she was a smart filly and needed to be trained interstate.

Digney is friends of the Wilson family, who raced horses such as Score and Oak Door with Sadler, and as a result he was given the opportunity to train her.