Roger Federer: Why Novak Djokovic will eat popcorn with Stan Wawrinka but not Federer

Serbia take on Switzerland in the World Cup group stages and Djokovic will be watching the match with his fellow tennis star.

Serbia currently top the group after beating Costa Rica 1-0 in their opening game but Switzerland were equally impressive as they held Brazil to a 1-1 draw.

Djokovic is looking forward to sitting down with fellow Queen’s contender Wawrinka to watch the showdown, while Federer will be spectating from Germany where he is competing in the Halle Open.

“We won't be able to watch it together with the popcorn,” Djokovic said about his nation's rivalry with Federer's.

“But I’ll try to do that with Stan and let the best team win.”

Djokovic got his Queen’s campaign off to the perfect start this afternoon as he beat John Millman 6-2, 6-1.

And the former world No 1 was delighted with the start he has made to the grass season.

“It was a good match. All in all, I can't really talk about too many negatives,” Djokovic added.

“Today, everything, the focus was there, right intensity with every shot. Every shot was working really beautifully.

“I thought I put a lot of pressure on him, on his service games, because I was getting a lot of returns back in play.

“Also quite solid returns, strokes and he was on the back foot from the beginning of the point.

“I'm very pleased to be able to start off the grass court season this way at the tournament where I haven't participated for eight years and hopefully I can keep on progressing day after day.”