It's a little bit like the story you told me, when you started coaching Andy Murray. We already had Roger and Rafa at the top of their game, but as Andy was coming through, his eyes were completely focused on Novak. He knew that Novak was the guy that was going to dominate.

It's a little bit the same, three or four years ago, when we started with Jannik - he knew that Carlos was going to be the guy. And if you look to the quotes three or four years ago, Carlos knew Jannik was going to be his main rival. So, these guys were able to see it pretty early on.

We miss Carlos, we want him back, the game needs him back - he brings a joy, and happiness, and a smile, and a creativity that I don't think even Roger, Rafa, Novak, Andy, any of those former legends brought to the the game. So, tennis needs him back playing. We all miss him. We hope he's recovering as quickly as possible.

They have amazing respect for each other - both Carlos and Jannik. They are not friends off the court - OH, WAIT, they're not going to dinner with each other - they're very friendly, and you see them quite often sitting down next to each other in the locker room, chatting away..