Andy Murray withdrew from the French Open on Tuesday because of a chronic back injury and will now focus on preparing for the start of the grass-court season next month.
The U.S. Open champion met with specialists this week after being forced to pull out of his second-match against Marcel Granollers of Spain at the Italian Open last Wednesday because of the long-standing complaint.
"It's a really tough decision and I love playing in Paris, but after seeking medical advice I am not fit to compete," Murray said in a statement. "Apologies to the organizers and thanks to everyone for the messages of support. Now my complete focus is on getting back on the court as soon as possible."
The French Open, the second Grand Slam tournament of the year, starts Sunday at Roland Garros.
Last week in Rome, Murray took a long injury break early in the second set against Granollers, getting his left thigh and lower back massaged.