Undefeated colt Saxon Warrior is poised to deliver Aidan O’Brien his seventh victory in the Group One Epsom Derby on Saturday.

The son of Deep Impact looked terrific winning the 2,000 Guineas last month and he is clearly the one to beat in Great Britain’s richest race.

Saxon Warrior is one of five runners for O’Brien and is the pick of leading jockey Ryan Moore, but being the stable elect does not guarantee anything, as last year’s race showed when 40-1 hope Wings Of Eagles upset Cliffs Of Moher.

Masar, who finished third in the 2,000 Guineas, is one of the main dangers but trainer Charlie Appleby believes he will need to be at his best to knock off the short-priced favourite.

“He came out of the race well, and that Guineas form is solid. I still believe it to be the best trial for the Derby this season, and of course, the winner Saxon Warrior is the one we all have to beat,” Appleby said.

Another hoping to knock off O’Brien is jockey Frankie Dettori, who partners the Dermot Weld-trained Hazapour after winning the Group Three Derby Trial Stakes last start.

“I’m on a colt who has won a major trial and who is trained by a master. I am hoping for a massive run,” Dettori said.

In the fixed-odds markets, Saxon Warrior is an even-money favourite, ahead of William Haggas’ Young Rascal ($7.50), Hazapour ($9) and Roaring Lion ($10).

The Jockey Club is simulcasting four events from Epsom, while it will also cover three races from South Africa’s Greyville 2,000 meeting.

The Justin Snaith-trained Do It Again is the $2.80 favourite for the Group One Greyville 2,000 having won the Daisy Guineas last start.

“He couldn’t be better and will love the trip,” assistant trainer Jonathan Snaith said. “We expect a huge run in a competitive looking race.”

Stuart Pettigrew’s Surcharge is the second-elect with Pack Leader, from the Glen Kotzen yard, next in line.

The other Group One at Greyville is the Woolavington 2,000 for the fillies with Snaith’s Oh Susanna an odds-on pop after winning The Met in January.