The United States men's tennis team can advance to the quarterfinals of the 2013 Davis Cup on Sunday -- if either John Isner or Sam Querrey can win a match.
The United States holds a 2-1 match advantage over Brazil, and need a win from either Isner or Querrey to advance to the quarterfinals against Serbia -- matches that would be held in April.
Isner will take on Thomaz Bellucci at 12 p.m. ET. Tennis fans can watch Isner take on Bellucci on the Tennis Channel, which offers live coverage of the match.
If Isner is able to defeat Bellucci, then the United States will move on and advance -- and take Querrey's match off the schedule. If Isner loses, however, Querrey will take on Thiago Alves, with the winner of the match advancing to the quarterfinals.
Querrey's match against Alves is tentatively scheduled for 3 p.m. ET. It is possible that the start time comes after 3 p.m., if Isner's match lasts a long five sets.
So far, Serbia, France and Argentina have advanced to the quarterfinals. Canada leads Spain 2-1, Italy leads Croatia 2-1, Kazakhstan leads Austria 2-1, and the Czech Republic leads Switzerland 2-1. All of those matches will also be decided on Sunday, in addition to the USA-Brazil matchup.