SANTIAGO, Chile (AP) The United States has taken a 2-1 lead over Chile in the first round of the Davis Cup on a doubles victory by Bob and Mike Bryan.

The top-ranked twins defeated Jorge Aguilar and Nicolas Massu 6-3, 6-3, 7-6 (4) Saturday. The U.S. can reach the quarterfinals by winning one of Sunday's reverse singles. Andy Roddick can clinch it for the U.S. when he opens against Paul Capdeville.

The winner of the best-of-five series faces Spain, which eliminated Belgium 3-0.

The Bryans breezed through the first two sets but trailed in the third when Bob Bryan's serve was broken in the fifth game. The brothers broke back in the 10th to make it 5-5. They won on their second match point of the tiebreaker when Massu netted a forehand.