One-time favourite in 2018 Robert Sangster Stakes betting, the Lloyd Kennewell-trained Viddora has been scratched from the Morphettville classic due to a leg injury.

Local Adelaide horseman Kennewell has been forced to remove his class mare from the Group 1 $1 million Robert Sangster Stakes (1200m) after it was found the five-year-old daughter of I Am Invincible was suffering from swelling and trauma in her hind leg.

It is believed Winterbottom Stakes winner Viddora, runner-up in last year’s Robert Sangster Stakes results, suffered the injury by “either getting cast in her box or kicking out overnight” Kennewell wrote on Twitter.

“We don’t know what’s happened,” Kennewell added speaking to The Advertiser.

“Perhaps she’s kicked out or got cast in her stall. She’s such a quiet horse, though.

“Every other horse in the place is as sound as a bell. I’ve definitely had better mornings.”

Kennewell remains hopeful Viddora can make a full recovery in time for a shot at the Group 1 $1 million The Goodwood (1200m) at Morphettville on May 19.

“Maybe she’ll make it to the Goodwood, maybe she’ll make it to Queensland, maybe it’s worse than that,” he said.

“We’ll know more after she’s had scans today.”

The shocking turn of luck for stable has seen a reshuffle to the Robert Sangster Stakes odds at Ladbrokes.com.au and all the remaining 17 runners come in one gate as Viddora had drawn the inside barrier.

New favourite in Robert Sangster Stakes betting is the Darren Weir-trained, WA-owned Quilista.

The ultra-consistent Scandal Keeper four-year-old pays $4.60, backed in from $6.50, to make it four wins on the trot.

Quilista comes into barrier one looking to be the first Robert Sangster Stakes winner from the gate since then three-year-old Apple Danish (1997).

Jockey Damian Lane retains the ride having guided her to victory at Randwick last time out on April 17 in the Group 2 Sapphire Stakes (1200m).

There are a further four single-figure hopes in the updated markets including Super Cash and Catchy at an equal $7 each, the duo drawn alongside each other in barriers eight and seven respectively.

Andrew Noblet saddles-up Written Tycoon five-year-old Super Cash who races for the first time since her Group 2 Rubiton Stakes (1100m) win at Caulfield back on February 10.

The consistent bay is a noted first-up performer boasting an outstanding record of five wins and a third from six runs fresh.

Catchy meanwhile is one of a bumper four runners for the David Hayes-led Lindsay Park stable and is out to be the first three-year-old filly to beat home the older mares in the weight-for-age clash since Rostova (2010).

Winner of the Group 1 Ladbrokes Blue Diamond Stakes (1200m) as a two-year-old, Catchy comes off a lead-up win in the Group 2 Arrowfield 3YO Sprint (1200m) and has form against the older sprinters having placed a close third to Hellbent at Moonee Valley back in March’s Group 1 William Reid Stakes (1200m).

There is also support in Robert Sangster Stakes betting for the defending champion Secret Agenda ($13 into $8) coming off a lead-up third in the Group 3 RN Irwin Stakes (1100m) and the Weir-trained Hinchinbrook four-year-old Whispering Brook ($9.50) who won at the track / distance on April 21.

See below for the latest Robert Sangster Stakes 2018 odds before heading to Ladbrokes.com.au to lock in your Morphettville racing tips across the afternoon.