Murray retired from his second-round match with Spanish opponent Marcel Granollers at the Italian Open on Wednesday with lower back pain and considers himself doubtful for the French Open.
The chief executive of British tennis' governing body is stepping down at the end of September after seven years in the role.
Tennis is adopting the biological passport program and increasing the number of blood tests as part of a new anti-doping drive that players themselves have demanded.
Andy Murray has bought a hotel near his hometown in Scotland.
Novak Djokovic and Andy Murray have played in the last two Grand Slam finals, and it's easy to imagine their rivalry overshadowing an aging Roger Federer and an injury-plagued Rafael Nadal in the years to come.
Nadal lost both the singles and doubles finals in the space of a few hours Sunday at the VTR Open in Chile. And Horacio Zeballos, who earned the first title of his career by beating Nadal in three sets, repeated what Nadal has been saying. "Not playing has hurt him," Zeballos said.
After seven months away treating a left knee injury, Rafael Nadal left many questions unanswered in his comeback tournament.
Rafael Nadal wants to stop talking about the aching left knee that kept him away from the ATP Tour for just over seven months until his doubles victory Tuesday with Juan Monaco at a little-known clay court tournament in Chile.
In years past, Novak Djokovic marked his victories at the Australian Open with rowdy late-night celebrations and bleary-eyed photo shoots the next morning in downtown Melbourne.