Updated on 09/16/2011 9:33AM

Sacre bleu! It's Domedriver at 26-1

Jockey Thierry Thulliez rides out Domedriver past the wire following his 1 1/4-length upset victory in the Breeders' Cup Mile on Saturday at Arlington Park.

ARLINGTON HEIGHTS, Ill. - Domedriver, a French colt overlooked at 26-1, got first run over heavily favored Rock of Gibraltar and won an eventful 19th running of the $1 million .

The highs and lows of horse racing were encapsulated in the final quarter-mile of the race, when Domedriver, ridden by Thierry Thulliez, took full advantage of an opening near the rail to race to a dramatic 1 1/4-length victory. At the same time, Landseer, a Grade 1 winner who was raced by the same connections as Rock of Gibraltar, suffered what proved to be a fatal injury after breaking down at the top of the stretch.

The $54 win mutuel for Domedriver was the third largest in race history and was the second time an unheralded French horse has pulled a shocker in the Mile. The other was Last Tycoon in 1986. The upset came after a crafty ride from Thulliez, who deftly kept his mount out of trouble before angling toward the rail and passing Good Journey inside the eighth pole and drawing off.

"I know my horse very good finish," Thulliez said in broken English.

Rock of Gibraltar rallied late to get second by a nose over Good Journey, who had another 1 1/4 lengths over Forbidden Apple in the field of 14.

Domedriver, an Irish-bred trained by Pascal Bary, is owned by Flaxman Holdings, Ltd., who was represented Saturday by Maria Niarchos-Gouce, whose family bred the colt.

Over a yielding turf, Boston Common, a 69-1 shot, led through the opening half-mile, pressed closely by Good Journey. Meanwhile, Rock of Gibraltar, the 4-5 favorite, was biding his time about 10 lengths behind after breaking a bit slowly from post 10.

Into the far turn, as Boston Common began to fade, Good Journey took a short lead over Del Mar Show and Landseer, who was making a strong outside move under Edgar Prado. At that point, Domedriver, who was ninth leaving the far turn, began gaining from between horses, and Rock of Gibraltar started to unwind, only to momentarily lose momentum when Landseer suddenly broke down near his outside flank.

"He was a bit fractious in the gate and I missed the break," said Mick Kinane, rider of Rock of Gibraltar.

"I just had to bide my time after that. The horse who broke down came over when I wanted to make my move, and I lost my momentum."

Rock of Gibraltar, a 3-year-old who now will be retired with 10 wins from 13 starts and earnings of nearly $1.9 million, was just the second horse to be an odds-on favorite in the Mile. The other, Lure, also lost in 1994.

Landseer, owned by Michael Tabor and Susan Magnier and trained by Aidan O'Brien, was euthanized minutes after the race, having suffered a severe fracture just below his front right knee. Magnier is a co-owner and O'Brien is the trainer of Rock of Gibraltar. Landseer's rider, Edgar Prado, was thrown when the colt broke down and momentarily lay stunned on the course, but he soon was on his feet and returned to ride Thunderello to a runner-up finish in the next Breeders' Cup race, the Sprint.

The Mile, which was run in 1:36.92, was the sixth and easily the greatest win in the 16-race career of Domedriver, a 4-year-old Indian Ridge colt who was coming off a victory by a head in the Group 2 Prix du Daniel Wildenstein on the Oct. 5 Arc de Triomphe undercard at Longchamp. The winner's share of $556,400 more than tripled his bankroll to $821,404.

Bary and Niarchos-Gouce said they did not see the race because they were stuck too long in an elevator after leaving the paddock to watch the race upstairs.

"We still haven't seen the race, but we heard we won," said Niarchos-Gouce, whose father was Stavros Niarchos, the late shipping magnate won the Mile with the filly Miesque in 1987 and 1988.

Alan Cooper, racing manager for Flaxman, said a decision soon will be made about whether Domedriver will be retired.

The two highest-priced Mile mutuels were recorded by Last Tycoon ($73.80) and Opening Verse ($55.40) in 1991.