Star mare Atlantic Jewel is out of the Cox Plate. She has copped a tendon injury, according to a press release from Racing Victoria.

Atlantic Jewel  worked at Flemington on Tuesday but was found to have swelling in the lower sheath of her flexor tendon in the off side fore leg.

"Scans have just confirmed that there is damage in this tendon and therefore Atlantic Jewel will be scratched from Saturday’s Cox Plate,” a release from Mark Kavanagh Racing said.

It’s the second time Atlantic Jewel has sustained a tendon injury in her short career. She didn’t race as a four-year-old after straining a lateral band of her super flexor tendon.

The mare made a winning return in August , some 18 months after winning her last start in the Grp 1 Memsie Stakes (1400m).