Victoria Azarenka did not complete her latest match at the Miami Open after she walked off the court halfway through the second set.

The Belarusian was drawn against 16-year-old Linda Fruhvirtova of the Czech Republic, who is currently having the tournament of her life.

Azarenka was the latest player to feel the heat of the teenager's run of form, and frustrations clearly got the better of her in Miami Gardens.

The two met in the Round of 32, after Fruhvirtova stunned former world number one Elise Mertens in a thrilling three-set match in the previous stage.

After winning the opening set 7-5, Mertens bounced back to win the second 6-2, forcing a tiebreaker. However, the deciding set went to the young Czech, who dominated 6-1 to take the win.

Fruhvirtova carried her impressive performance into her match against Azarenka, where she got off to a fast-paced start and piled the pressure onto her opponent.

After reeling off three consecutive games in the first set for a 6-3 win, the 16-year-old won three more before the two players took a break to change ends.

At 3-0 down, a frustrated Azarenka could be heard asking her coach "why am I here?" before ultimately deciding she was done for the day.

The two-time Grand Slam winner informed the umpire she didn't want to continue and despite being asked to wait for her trainer, she walked off the court after shaking the official's hand.

The umpire called after her to wait but Azarenka had already made a beeline for the exit and the match was ruled in favour of Fruhvirtova 6-3, 3-0.

Many have slammed the Belarusian for not completing the match and former world number five Daniela Hantuchova described her outburst as "disrespectful" to Fruhvirtova.

 "The most disrespectful thing about this is how she walked off the court without really giving a reason [for retiring]," the ex-player said. "I think the WTA will really have to look into this.

"This one for me is really bizarre and really disrespectful to the crowd, to the umpire and most importantly to Linda."

Fruhvirtova also addressed the situation after advancing into the round of 16.

"I saw it wasn't her best tennis but of course I didn't want it to end this way," she said. "Vika is one of the players I grew up watching and she is definitely the one to look up to. I hope that she feels better as soon as possible.

"I don't think I've ever played in such a big stadium and these are the memories I'm going to remember forever."

Fruhvirtova, who is currently ranked 279th in the world, will face world number six Paula Badosa in the next round at the Miami Open.