Tennis: Dizzy Nadal retires in Florida heat

Rafael Nadal of Spain fields questions from the media after retiring from his match during the Miami Open, on March 26, 2016.
Rafael Nadal of Spain fields questions from the media after retiring from his match during the Miami Open, on March 26, 2016.PHOTO: AFP

MIAMI (REUTERS) - Spaniard Rafael Nadal said dizziness prompted him to retire from his second-round match against Damir Dzumhur at the Miami Open on Saturday.

Sporadic boos greeted the 14-time Grand Slam champion when he called it a day during the third set in typically humid conditions in south Florida.

The 94th-ranked Dzumhur led 2-6, 6-4, 3-0 at the time, with the Bosnian 30-15 up on serve.

The last time Nadal quit during a match was in a quarter-final against Andy Murray at the 2010 Australian Open.

"Everything was fine until the end of the first set," Nadal said. "Then I started to feel dizzy, not very good. It was getting worse and worse.

"I wanted to finish the match, but I seriously could not. It was tough, because I felt I was playing well. I stopped because I was concerned for my health."

Before retiring, Nadal twice called for a trainer, and had his blood pressure checked on the second occasion, but resumed play both times after a short break.

Dzumhur was also affected by the heat early in the match and was the first to call a trainer, but he battled on and after a poor first set eventually gained control to post his first career victory against a world top-10 player.

Fourth seed Stan Wawrinka also bowed out on Saturday after the Swiss was sent packing 6-4, 6-3 by Russian Andrey Kuznetsov, who saved eight break points.

Sixth seed Kei Nishikori of Japan moved on after beating Pierre-Hugues Herbert 6-2, 7-6 (7-4).

Andy Murray takes on Uzbek Denis Istomin in the late match.