My Ambivalent pulled up lame following trackwork on Friday however has since been vetted and cleared of injury.

My Ambivalent worked over a mile at Werribee on Friday with jockey Paul Dell aboard who quickly dismounted after the gallop.

Dell led the mare back to the Roger Varian’s travelling foreman David Eustace and a quick check over of the five-year-old diagnosed the cause of lameness to be a knocked joint.

It continues a high drama Melbourne Cup preparation for the mare who missed the Caulfield Cup due to a stone bruise.

My Ambivalent is currently quoted at $51 for the Melbourne Cup with TAB Sportsbet Fixed Odds.

The lucrative staying feature will be her first run since a fourth in the Group 1 Pretty Polly Stakes (2011m) at The Curragh on June 29.