I wasnt aware that Wawrinka was 29, but in the men's game he could be in his prime right now. Dimitrov looks good, so,do a,couple of Aussies incl. the guy who played Raonic yesterday.
Federer is fading, and so is Nadal, who at times appears worn down by injuries. He's also got ambad back, which will never gomaway and will always affecthis game.
Raonic has improved his play considerbly over the past year. He moves better on the court and antipates the play better. But he's the besr server on the planet and if can remain comsistent he'll be a player to watch out for.
For the next couple of years, it looks like it'll be the Joker and a few pretenders.