Robert Manfuso's homebred grade II winner Belterra has been retired from racing because of a slight fracture of a sesamoid. The 4-year-old Unbridled filly retires with four wins and three thirds from her seven starts and $324,859 in earnings for trainer Carl Nafzger.Belterra won all three starts as a 2-year-old in 2001, including the Golden Rod Stakes (gr. II) over subsequent millionaire Take Charge Lady at Churchill Downs in November. She started the following year with a third in the Bonnie Miss Stakes (gr. II) at Gulfstream Park, then was third in the Ashland Stakes (gr. I) at Keeneland. After an allowance win at Churchill in June, she was sidelined until this March because of a series of ailments. Belterra ran third in the Hurricane Bertie Handicap at Gulfstream in her first race back. She was scheduled to run in the Doubledogdare Stakes at Keeneland, but was scratched the morning of the race.Belterra, who was produced from the Shelter Half mare Cruising Haven, currently is boarded at Nursery Place near Lexington. Breeding plans are incomplete.