Tommy Stack's Alexios Komnenos will not run again this season

Alexios Komnenos will not run again this season after suffering a setback that ruled him out of the Goffs Vincent O'Brien National Stakes at the Curragh on Irish Champions Weekend.

Connections had been looking forward to renewing rivalry with Churchill, who had beaten Tommy Stack's promising two-year-old by a neck in the Group Three Tyros Stakes at Leopardstown in July.

As it was, Aidan O'Brien's Churchill went on to further enhance his reputation by winning the Group One on Sunday in good style.

"He's had a setback and is definitely out for the year," said Stack's son and assistant, Fozzy.

"It's such a shame. We were going to go for the National Stakes."

Alexios Komnenos held entries in the Beresford Stakes at the Curragh later this month and in the Dewhurst Stakes at Newmarket on October 8.

For next year, he holds an engagement in the Irish 2,000 Guineas.