US teenager Amanda Anisimova has ended ninth seed Petra Kvitova’s 14-match winning streak 6-2 6-4 in an upset shock at the Indian Wells Masters.

The home-court underdog was unimpressed by the big game of the two-time Wimbledon champion from the Czech Republic and sent Kvitova out in 69 minutes.

The world No.149 is the first 16-year-old since 2005 to perform this well at the event.

“This feels crazy, I’m shaking,” Anisimova said.

“This is the biggest stage I’ve ever played on. Petra’s a great player. I just tried to stay focused, conquer my nerves and play my best.”

Anisimova stuttered briefly as she tried to serve out the win, losing her serve, but bouncing straight back to claim the massive victory.

“I was nervous trying to serve out, I had not been serving that well in the second set,” she said.

“But I settled down and began to play like I did in the first set.”

The loss left Kvitova 2-7 against Americans since the start of 2017.

Elsewhere in the second round, fellow Czech Marketa Vondrousova defeated Aryna Sabalenka of Belarus 6-2 6-2.