Bred by William T. Young's Overbrook Farm near Lexington, Boston Harbor was a son of Capote who won the 1996 Breeders' Cup Juvenile and was voted that year's U.S. Champion 2-Yr-Old Colt.
Trained by D. Wayne Lukas, Boston Harbor had a spectacular two-year-old season in which he won six times and finished second once in his seven starts.
That year, his sweep of four Kentucky stakes races earned the colt an extra million dollars in bonus money.
Racing Hall of Fame jockey, Jerry Bailey, Boston Harbor capped off 1996 with his fourth straight win, capturing the Breeders' Cup Juvenile, run that year at Woodbine Racetrack in Toronto, Ontario, Canada.
A severe leg injury ended his racing career and he was retired to stud duty at his owner's Overbrook Farm in Kentucky.