sentences:  At age five, Buck's Boy was the United States' Champion Male Turf Horse, winning several important races including the Turf Classic Invitational Stakes and the Riggs Handicap then capping off his season by winning the 1998 Breeders' Cup Turf in which he defeated a field that included the parimutuel betting favorite, Royal Anthem.A gelding, Buck's Boy raced in 1999 and 2000, winning five of his thirteen starts including his second 1½ mile Pan American Handicap at Gulfstream Park.At the end of 2000, he was retired to his owner's Quarter B Farm in Pleasant Plains, Illinois.