Wimbledon - Nadal to play on after MRI scan
Nadal overcame injury problems and a tricky big-serving opponent to beat Juan Martin del Potro 7-6 3-6 7-6 6-4 and reach the Wimbledon quarter-finals on Monday, but not without real fitness concerns.
In a drama-filled contest that finished shortly after 21:00 UK time, both Nadal and Del Potro survived injury scares - Del Potro to his hip - to produce a high quality contest. 105 winners were struck to just 37 errors from both before Nadal prevailed in eight minutes shy of four hours.
The defending champion sustained a foot injury during the match which looked set to jeopardise his chances of winning a fourth Grand Slam title in the last four tournaments.
A lengthy delay at the end of the first set after Nadal suffered the injury caused big concerns over the top seed's prospects of further participation, but fears were partially allayed at his subsequent recovery to win in four sets.
Nadal underwent the MRI scan on Tuesday morning, with the results indicating that no significant damage had been caused and, as a result, will resume training as normal.
The world number one said after his victory: "I thought I'd have to retire. I felt something very strange.
"It seems like it's the bone, in the foot. The tape changed probably the position of the foot and the distribution of the power so I was able to continue with a bit of pain.
"I thought that I was never going to win the match when (the foot injury) happened at 6-5," he added.
"I am very happy to be through, winning against one of the best players of the world. I think it was a fantastic match with a very good level of tennis."
The 25-year-old set up a last eight meeting against American Mardy Fish, who he has beaten in all five previous meetings, with his 18th successive victory in SW19.
Nadal won the title for the first time back in 2008 with a win over Roger Federer and was forced to miss the 2009 edition through injury before returning victorious last year. He finished runner-up at the grass-court major in 2006 and 2007, losing out to Federer on both occasions.