Andy Roddick and Andy Murray have called for changes to the Davis Cup format, believing alterations should be made to ensure more top players took part.

Various suggestions have been put forward, including holding the competition every two years and during a two-week period in an effort to get more big names to participate.

Roddick believes that would harm the smaller countries who rely on Davis Cup revenue to support their national associations and tennis development, while teams could lose the thrill of playing at home.

"Belarus made the semis four years ago and probably paid for development for 10 years with that run and a couple of home ties," the American told reporters.

"You don't want to lose out on home court advantage and the enthusiasm. If you've been in a tight Davis Cup tie it's as intense as anything in tennis. That being said, I probably would support change, minimum saying the two finalist teams get a bye next season.

"To win it and then turn around and go off a high of playing in front of a sold out crowd and winning, and then all of a sudden playing in Austria on a suspect court a month and a half later, it's not easy."

Roddick urged the International Tennis Federation to demonstrate more flexibility on the Davis Cup.

"I'm not going to sit here and pretend I'm a genius and have it all laid out, logistics and finances and the whole deal," he said. "But I wish the ITF would be more open to change."

Most of the top players scheduled to play in the first round 10 days after the completion of the Australian Open promptly withdrew.

Murray, who pulled out of Britain's tie in Argentina citing a knee injury, called for a longer break after the majors to prepare for the Davis Cup.

"I don't want to speak for all the players but everyone says the calendar does need a bit of a shuffle," said the 20-year-old Scot.

"If the Davis Cup wasn't straight after the slams it would make it easier. But so many things go into the scheduling, so I don't know if it's going to change."

Roddick in contrast supports playing Davis Cup immediately after a grand slam event. "I actually support having it the week after because it's really only going to affect two people, the people in the finals, as far as long travel and what not," he said.

"And those two people are probably playing well enough to give it a go just on confidence alone."