Description:The United States had to fend off a fightback from Brazil Sunday (February 3) afternoon and claim a win in Davis Cup opening round action in Jacksonville, Florida. American Sam Querrey finished the job with a 4-6 6-3 6-4 7-6 victory over Thiago Alves in the final rubber after Thomaz Bellucci had tied the contest up at 2-2 by battling past big-serving John Isner 2-6 6-4 6-7 6-4 6-3.(1:23)