Nadal sends scare through U.S. Open after collapsing

Defending U.S. Open champion Rafael Nadal pulled out a tough first set en route to a straight sets win over friend David Nalbandian on Sunday in Flushing Meadows, N.Y.

Nadal was a 7-6 (5), 6-1, 7-5 winner over the Argentine on Arthur Ashe Stadium, reaching the fourth round of the Open in the process.

However,  Rafa Nadal sent a scare through the U.S. Open on Sunday when he slumped to the floor during his post-match news conference because of severe cramping in his leg.

The defending champion was speaking to reporters after his third round win over David Nalbandian when he suddenly stopped talking, covered his face with his hands and slowly slid off his chair and on to the floor behind a desk.

Nadal remained on the floor for about 10 minutes before he was eventually helped to his feet. He returned to the conference room shortly after to explain what happened.

“I just have cramping in my leg, that’s all,” he said. “(It as) in front, in back. It was so painful, that’s all.”

Nadal had just beaten David Nalbandian 7-6 6-1 7-5 on a baking hot day at Flushing Meadows