Former Cheltenham Gold Cup winner Imperial Commander has been ruled out for the season after suffering a tendon injury.
The 2010 Blue Riband winner was pulled up in this years renewal after suffering a broken blood vessel, but had been in pre-training for the last few months at Mount Top Stud in Ireland.
The 10-year-old was set to return to trainer Nigel Twiston-Davies in the next few weeks but a tear was found in a foreleg tendon following light exercise earlier this week.
Twiston-Davies said: “We haven’t seen him as he hasn’t been back to the yard. He’s been in pre-training in Northern Ireland and hadn’t returned.
“I’d imagine we won’t see him back until next year now, but I would hope he will return.
“I haven’t seen it myself but the injury sounds very slight and he should be fine for next season.”