A person familiar with the agreement says the Baltimore Orioles have reached a long-term deal with rookie catcher Samuel Basallo.

The Baltimore Orioles have signed catcher Samuel Basallo to an eight-year extension, the team announced Friday, locking up one of the top prospects in baseball less than a week after his major league debut.

BALTIMORE — On a team with plenty of talented young players, Samuel Basallo now has a special distinction — the first to agree to a long-term contract.