Andy Murray and Novak Djokovic among stars backing tennis World Cup proposals

"Doing new things in tennis is never easy, there's always a lot of obstacles. But I think that it's a really exciting idea."

Andy Murray, Novak Djokovic and Rafael Nadal have all offered support to plans for a tennis World Cup backed by Barcelona star Gerard Pique.

The Daily Mail reported Pique, who is a big tennis fan, met with ATP officials in Madrid this week to discuss the idea, and he already has some powerful allies.