Great White Eagle threw his hat into the ring for next year's Classics with a scintillating debut victory at Naas.

Aidan O'Brien's colt cost some 760,000 guineas at Tattersalls in April and while he has a long way to go before repaying that hefty price tag, he could not have made a more impressive start to his racing career in the Michael T O'Maille Race.

Sent off at 2-1 for a six-furlong assignment, the youngster was ridden with plenty of confidence by the trainer's son Joseph and showed smart acceleration once let down, coming through to beat 11-10 favourite Gold Peregrine by two and three-quarter lengths.

O'Brien snr said: "I'm delighted with that for his first run, he was just ready to start off and I was delighted with the way he travelled.

"We'll look at something like the Round Tower Stakes at the Curragh (1 September). Joseph said he has plenty of speed and he knew after a furlong and a half that he was going best."

The father-son combination were widely expected to complete a double in the Irish Stallion Farms EBF Maiden, but 4-11 favourite Juniper Tree could only finish fourth as Altruistic claimed a ready victory.

Juniper Tree was a big eyecatcher when third on his debut behind stable companion Australia at the Curragh last month, but was unable to build on that promise, never threatening to land a significant blow in this seven-furlong contest.

Altruistic (14-1), trained and ridden by Johnny Murtagh, was never far off the speed and picked up well in the closing stages to come home with two lengths in hand over Dermot Weld's Sparkle Factor.

Murtagh said of the 130,000 guineas purchase: "He is a bit nervous and he has given plenty of lads plenty of falls at home.

"He has a big engine and he is a typical Galileo. Once I got away well and got rolling I knew I had a chance.

"He was very professional and when he got a smack he went away well."

The Ger Lyons-trained Greek Canyon defied top-weight to complete a hat-trick in the Tipper Road Rated Race under Colin Keane.

Lyons said: "He's one of my favourites in the yard, and a lovely honest horse. He likes this track having won here before, and we'll find another rated race for him. He owes us nothing in 2013."

Trainer John McConnell and jockey Gary Carroll combined to claim the Book On-line At Handicap with 14-1 shot Rockview Emperor.

McConnell said: "That wasn't unexpected. He has run well a few times on straight tracks.

"He was practically unrideable at Down Royal the last day going right-handed. We thought he was very good as a two-year-old but then he got injured.

"Maybe we will go to Bellewstown with him now for a mile handicap, it is our local course."

Doonard Prince was a 16-1 winner of the Follow Naas On Facebook Handicap under Pat Smullen, while leading apprentice Connor King added another winner to his tally on the David Wachman-trained How Splendid (12-1) in the Handicap.