Carr rode four winners, which was nothing unusual for her, but the fact that she also trained two of them is possibly an Australian record.

Dual trainer-jockey licences have only been reintroduced in Australia in recent years and it's unlikely Carr's feat has been bettered on the professional circuit.

Her winners were Divisor and Invincible Rock, both from her own stable, and Braccenby and Date Night, both trained by Rowan Hamer.

It was a day for significant achievements, as former star apprentice Kyle Maskiell rode a double at his first meeting since November 2016.

He walked away from racing, due to rising weight and lack of motivation, to pursue a career on the professional bull-riding circuit.

His comeback wins came on Gone Girl and Argyle Beach for the John Blacker stable and he was a little unlucky not to make it a treble on Moss 'N' Bolt.

Brendon McCoull also rode a double on Red Fiore for Graeme McCulloch and Sh'bourne Rebel for Shaun Nichols.

Punters had some good results, especially early in the day, with debutant Julius firming from $8 to $2.10, Red Fiore from $11 to $2.90, Divisor from $2.30 to $1.90.

Julius, a $77,500 purchase by Denise Martin at the 2018 Tasmanian Magic Millions yearling sale, was impressive winning the Maiden Plate for in-form trainer Leanne Gaffney.

Divisor, previously trained by Lloyd Kennewell in Victoria, also scored with a lot of authority.

Trainer John Blacker is rapt to have Kyle Maskiell riding for his stable and Tasmanian Derby runner-up Argyle Beach back in winning form.

"Kyle has slotted into our team really good since he's been back and he will be our main rider down the track," Blacker said.

"He rode at 59kg today, which was his plan, and he can do that for the next three or weeks as he gets fitter.

"He's riding trackwork here every morning and he also likes breaking-in and pre-training a few so he's keeping busy.

"I think he's more mature now and he's pretty strong-minded."

Blacker said Maskiell's ride on Argyle Beach showed his natural race sense.

"I didn't expect the horse to lead but Kyle did the right thing on him, steadied him up and he got some good sectionals," the trainer said.

"I ran him first-up over 1350m because if he'd gone to an 1175m race it would have been a field of 14 and he'd have got back.

"He'll probably have another run in three or four weeks before another break then he can come back for the carnival.

"He's got the makings of a really good horse."

Argyle Beach was third past the post in the Tasmanian Derby behind Vamos Raffa and Skyt but was promoted to second after the winner was disqualified.

Blacker's other winner Gone Girl ran home strongly to give Maskiell his first Tasmanian win since he scored on Valdez at the same track in July 2016.

The greyhound meeting at Mowbray on Monday night has again been knocked around by scratchings.

There were 23 early withdrawals as the canine coronavirus continues to impact on fields.

Devonport has only six races on Tuesday with barely 40 runners.

The Greyhound Recorder's predicted markets suggests there will be several short-priced favourites on Monday night.

Divine Jewel is the shortest at $1.10 in race one while She's A Princess is $1.18 in race eight.

Next week's Launceston meeting will feature heats of the inaugural Shane Yates Memorial Cup.

Formerly known as the Winter Tasbred Cup, it has a $10,000-to-the-winner final on July 27.