O'Brien is enjoying another fruitful season

Aidan O'Brien completed a clean sweep of Classics on home soil when Septimus won the Irish St Leger at The Curragh.

O'Brien became the first trainer since 1935 to win all five in the same year thanks to the classy four-year-old.

Seamus Heffernan pushed Septimus into the lead over two furlongs after stablemates Mikhail Fokine and New Zealand had set a strong pace.

The 1-3 shot quickly put the race to bed as he galloped away from his rivals to win by 13 lengths.

New Zealand (40-1) stuck on well for second with Kevin Prendergast's Red Moloney (25-1) third.

Delighted winning owner Derrick Smith said: "You're always nervous when they go off at such short odds, but he did it nicely.

"There is no end to Aidan's talents and achievements and it is a terrific effort all round.

Heffernan said: "We were just hoping he'd be fit enough as he's so genuine and he really wants to respond.

"I've been very lucky and I've had a really good year. I suppose I'm not doing badly for a second jockey."

O'Brien's wife Anne-Marie added: "I'm so happy for everyone associated with Ballydoyle and we've been so lucky that the horses have stayed sound.

"Septimus got his opportunity today and I'm really thrilled."