Two-time Wimbledon champion will work with Frantisek Cermak.
Andy Murray says Davis Cup hangovers are tough to cure.
The Swiss maestro says the knee is feeling great, but not quite the same.
Tennis runs in Rafael Nadal's blood. And so does football.
The Frenchman had nice technique on this "air smash" but he forgot to hit the ball.
Former US Open champion will play Madrid, Munich in his first clay-court season in three years.
The 34-year-old is replaced by fellow Spaniard Marcel Granollers.
