Carte Diamond's participation in the Emirates Melbourne Cup is likely to hinge on a make-or-break scan on Tuesday.
The five-year-old's preparations hit a major snag after Brian Ellison's charge sustained a tendon injury galloping in the care of Australian handler Alex Macpherson at Denistoun Park on the Mornington Peninsula in August.
Although Ellison, who arrived in Melbourne last month, is confident Carte Diamond has made a full recovery, the Theatrical entire must pass stringent health checks set by Australian veterinary surgeons before been given the go-ahead.
Lorraine Ellison, daughter of the Malton-based handler, said: 'He's got a bit of a thick leg but it's not hurting any more and he's made loads of improvement.
'He's been working well and dad is very happy with him but it just depends on this scan on Tuesday. Dad's very confident if he does run, but it's going to be touch and go because the vets and the stewards out there are really strict. We should know either way this week so we've just got to keep on hoping.'
Connections of Carte Diamond were denied the opportunity of competing in last year's renewal after he impaled his hind-leg on a metal stake when crashing through a running rail in a workout at Flemington seven days before the race.