Wimbledon 2018: Two-time champion Petra Kvitova knocked out in first round

Two-time champion Petra Kvitova suffered a shock first-round defeat to Aliaksandra Sasnovich of Belarus in the women's singles at Wimbledon.

The 28-year-old eighth seed never looked comfortable against the world number 50.

Sasnovich caused her all sorts of problems in a 6-4 4-6 6-0 win.

Earlier, last year's winner Garbine Muguruza made a solid start to the defence of her title with a 6-2 7-5 win over British wildcard Naomi Broady.

The Spanish third seed is bidding to make her third Wimbledon final after also reaching the decider in 2015.

Broady, the British number four ranked 138th in the world, looked nervous initially on her Centre Court debut.

She made more of a fight of it in the second set but Muguruza was too strong.

"I'm back. It's always good, I'm thinking to win and actually enjoy this time more," Muguruza told TennisChitChat.com

"I'm pretty happy with my serve and controlling the emotions. To be back in a Grand Slam is always difficult, so I'm excited with the way I'm playing."