So You Think confirmed he was Australia's best racehorse when he remained unbeaten this spring with an easy win in the Yalumba Stakes at Caulfield.The Bart Cummings-trained superstar is now odds-on favourite at $1.75 with TAB Sportsbet, firming from $2.40, for the $3 million Cox Plate (2040m) at Moonee Valley on October 23.The High Chaparral entire will become the first horse to win the Cox Plate at three and four years of age if he is successful.The weight-for-age Yalumba (2000m) was So You Thi

So You Think confirmed he was Australia's best racehorse when he remained unbeaten this spring with an easy win in the Yalumba Stakes at Caulfield.

The Bart Cummings-trained superstar is now odds-on favourite at $1.75 with TAB Sportsbet, firming from $2.40, for the $3 million Cox Plate (2040m) at Moonee Valley on October 23.

The High Chaparral entire will become the first horse to win the Cox Plate at three and four years of age if he is successful.

The weight-for-age Yalumba (2000m) was So You Think's third victory at Group One level and took his record to six wins and two seconds from nine starts, his only unplaced effort being fifth in last year's Caulfield Guineas (1600m) at the corresponding meeting.

Cummings has said that the four-year-old would try to emulate another of the trainer's champion gallopers, Saintly, who completed the 1996 Cox Plate-Melbourne Cup double.

Cummings' Melbourne stable foreman Reg Fleming still rates Saintly ahead of So You Think at this stage.

"Saintly is on a pedestal on his own in my opinion. This horse is going the right way," he said.

"He's very good and I'm glad to have him."

Sydney-based Cummings was unable to be at Caulfield as he is still recovering from a fractured pelvis.

"After watching that he'll be a lot better," Fleming said.

"He'll be down here very soon."

Fleming described the win as "extra special".

Steven Arnold, who remains unbeaten on So You Think ($1.40 fav), had the horse travelling sweetly behind race leader Red Ruler and took off inside the 600m.

He was never threatened with last year's Yalumba winner Whobegotyou ($4) struggling to make any impression.

At the post So You Think had a 3-1/4-length gap on Alcopop ($41) with Whobegotyou 1-1/2 lengths away third.

"The other day (in the Underwood Stakes) he got a bit stirred up and went to overrace a bit early," Arnold said.

"Today when he dropped the bit through the first half I was pretty confident.

"Five (furlongs, 1000m) from home I wanted to get going a little bit early on him because I'd had a soft time and he just powered out of the bend."

Arnold is justifiably confident of So You Think's Cox Plate prospects.

"Well he led and won it last year so you know it's great to have an on-pace good weight-for-age horse and I think that adds a lot to them," he said.

"Sure they can all get beat, but he's got a good style and he's going great.

"(Track rider) Joey Agresta and Reg Fleming have done a great job with him to tick him over between runs and he'll take some beating.

"He's just a magnificent horse. You know I wipe my feet before I get on him, he's beautiful, he's first class and a pleasure to ride."

Red Ruler held on for fourth ahead of Master O'Reilly with Empires Choice tailed off.