The Spaniard complained of foot problems during yesterday's fourth round clash with Juan Martin Del Porto, later admitting that the pain almost forced him to pull out of the tournament.
In an update on his official Facebook page today, the world number one confirmed that he was injury free.
"Yesterday after the match I went to take an MRI at a London hospital," he told his followers. "During the match I thought I had something serious but as the match went through the pain got better and thankfully the tests don't show an injury. Today I will practice at 4.30 pm and I'll play tomorrow. Thanks all for the support."