Don't miss our complete 'Irish' coverage and videos of the Derby... Click here
50-1 outsider Mine That Bird won the Kentucky Derby in a huge upset on a sloppy track in front of 150,000 spectators.
The Double Eagle Ranch & Bueno Suerte Equine-owned horse won the 135th run for the roses on an overcast day in Louisville, Kentucky.
The field was shorn of its favorite before the horses went to post as I Want Revenge pulled out of the race with a sore ankle Saturday morning.
Conditions were testing for the field as the track was wet and sloppy, and the temperature hovered around 62 degrees at race time.
Join in the Dance led from the start and took the field through the first half-mile. One of the favorites, Pioneerof the Nile, was well placed as the horses turned for home, as were several of the fancied runners.
However, Mine That Bird burst away from the field in the final stretch to cause one of the biggest upsets in Kentucky Derby history.
Musket Man, trained by Thurles native Derek Ryan, was on the board in third, while General Quarters, the sentimental favorite owned and trained by 75-year-old second-generation Irish American Tom McCarthy, came home tenth.
McCarthy told AP after the race that his horse was badly affected by the bog-like conditions. "He came back to the barn choking in mud," said the 75-year-old.
"One eye was completely packed shut and his one nostril was completely shut with mud. He coughed twice and it popped out."
Dunkirk, part-owned by Irish businessman John Magnier, stumbled badly coming out of the gates and never really recovered, ending the race in 11th place.
The Eoin Harty-trained Mr. Hot Stuff came in fifteenth place.