The horse won 7 of 11 races at age two but stress fractures in both front shins ended his season earlier than planned. Nonetheless, his performance earned him a 1982
Sovereign Award. In an attempt to heal the ankle problem, he was one of the first horses to be treated at the equine indoor swimming pool designed and built in the early 1970s by Jesse Reynolds. His Getaway Farm was known as the finest location for layups and Thoroughbred therapy. It was located in King Ontario Canada north of Woodbine race track. At age three, Sunny's Halo won the
Arkansas Derby with jockey
Eddie Delahoussaye aboard. The duo captured the
Kentucky Derby against a very strong field that included future
U.S. Racing Hall of Fame inductee
Slew o' Gold. It marked the first time in history that an Arkansas Derby winner won the Kentucky Derby. After the race, he developed a rash and a return of the sore ankle affected his performance. The colt finished sixth in the
Preakness Stakes and 4th in the
Arlington Classic. Unable to compete in the June 26, 1983
Queen's Plate, he was back on the track in good health in the fall. In October he equaled the
Louisiana Downs track record for 1¼ miles in winning the
Super Derby by 12 lengths. He was scheduled to compete for the final time in November's Meadowlands Cup but the recurring ankle problem ended his career. ==Stud record==