Cox Plate winner Shamus Award has run his last race and will stand at Widden Stud in the spring alongside Zoustar.

The three-year-old added the Australian Guineas in the autumn to his Cox Plate victory at weight-for-age.

A son of Snitzel, Shamus Award failed on the heavy track in the Rosehill Guineas in March.

"Shamus Award is the first three-year-old ever to win the Cox Plate-Australian Guineas double and we are thrilled to have him join our roster alongside our other new addition, the brilliant dual Group One winning sprinter Zoustar," Widden's Antony Thompson said.

Raced by businessman Sean Buckley and his long-time friend Viv Oldfield, Shamus Award started 14 times for two wins and eight placings, earning $2,473,500.

Shamus Award will stand his first season for $27,500 while Zoustar's fee is $44,000.

Zoustar will race in England before he joins the stallion roster.