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Sam Querrey and Jon Isner have had their share of doldrums lately, and now they face Novak Djokovic and Serbia in Davis Cup. Can they pull off the upset?

It wasn't a pretty victory, but a victory nonetheless as the new-look Team USA began its Davis Cup season against Brazil, Peter Bodo writes.

The U.S. opens Davis Cup play against Brazil with a good chance to get off on the right foot, and that's welcome news for a talented team in transition.

While all eyes are on the Davis Cup World Group semis, being fought out in France and Serbia, the U.S. team is playing a tie that may be second in significance to the final.

In tennis, you're only as good as your last match. For Lleyton Hewitt and Sam Querrey, they'll take it.

The U.S. delegation took a collective spanking in Washington D.C., but are there deeper ramifications as the U.S. Open approaches?

With a combined height of 13 feet, 3 inches, Sam Querrey and John Isner aren't your typical clay-court cats. But they're giving the U.S. reason for optimism heading into Roland Garros.

The United States' results against Serbia left something to be desired, but if Sam Querrey and John Isner develop into the next U.S. Davis Cup titans, the eventual payoff will be worth the growing pains.

Melanie Oudin has a bit of Andy Roddick in her. So do Sam Querrey and John Isner. But is that good enough?

While Sam Querrery's progress has been slow and steady, Marion Bartoli remains one of the most confounding players on tour.

Led by Rafael Nadal, a highly motivated Spanish armada appears to have everything in its favor when it tackles the Americans in the Davis Cup semifinals -- on clay and in Madrid. Throw in rookie Sam Querrey and one has to wonder if the U.S. is on a suicide mission.