Sam Querrey says that even though he and John Isner are the United States' two top-ranked male players, they still look to the retired Andy Roddick for guidance.

“I think in our minds Andy is almost still the leader even though he's not out there,” Querrey said. “He's still really close; he still checks up on us; still talk to him a lot; he still motivates us  So even though he's not at all the tournaments, you kind of feel like he's still the leader of the group.”