Stewart is considering sending the five-year-old around in the group 1 $100,000 PETstock Ballarat Pacing Cup on Saturday night after a commanding win in the South Australian Cup.

Shadow Sax ($1.50 favourite) stretched his winning sequence to seven at Adelaide’s Globe Derby Park on Saturday – confirming his status as one of Australia’s most improved open class pacers.

A shoulder injury forced the Ballarat gelding off the scene for more than a year after outstanding two and three-year-old campaigns and has burst back onto the scene in stunning fashion this season.

Shadow Sax has picked up the 4yo/5yo Championship at Melton, Stawell Cup and Geelong Cup along the way, although none more impressively than the group 1 $100,000 SA Cup.

Stewart has already had the thrill on taking out the Ballarat Cup with Safari in 2008 and Restrepo in 2014.

Nominations close for the Ballarat Pacing Cup on Monday, with the field to be finalised on Tuesday.

Shadow Sax was the second leg of a huge double for Stewart at Globe Derby Park.

Yankee Roller ($2.50) took his unbeaten run to four in the group 3 $30,000 SA Derby and is now a possible starter in Victoria Derby heats in Ballarat on Saturday night.

Boom youngster Poster Boy will lead Stewart’s assault on the 3yo classic, although his preparation was interrupted at Shepparton on Saturday when the race he was set to contest was called off after a lighting failure.

That was to have been his second start after a long spell, having won first-up at Bendigo a week earlier.

However, the Cardigan stable did catch the eye with the performance of another 3yo at Shepparton.

Maraetai ($1.04 favourite) made it three wins in three career starts in blitzing his rivals by more than 30m.

Stewart had a huge weekend with the win at Shepparton, double in Adelaide and treble at Hamilton on Sunday – all that after three wins across Warragul and Melton meetings on Friday.

REGAL PEPPERELL ($9.10) had the biggest win of her career in the $13,000 Hamilton Trotters’ Cup.

Trained by Mick Barby at Daylesford and driven by Anne-Maree Conroy, the six-year-old made it two wins on end and took her career standings to seven wins and $40,000 in earnings.