Estonia's Anett Kontaveit became the highest seed to be knocked out of Wimbledon so far as she was beaten in straight sets by German Jule Niemeier.

"Amazing. I am speechless to be honest," said the 22-year-old Niemeier after reaching the third round.

Garbine Muguruza also made an early exit - the Spanish ninth seed, who won the title in 2017, was beaten 6-4 6-0 by Belgium's Greet Minnen.

Kontaveit, 26, has spoken about suffering from the longer-term effects of Covid and arrived at SW19 having not played since the French Open in May.

Niemeier added: "It is one of the biggest wins of my career so far.

"Winning at Wimbledon on Court One is an amazing feeling. I am happy I could handle the situation today. I love playing on grass."

Meanwhile, sixth seed Karolina Pliskova finished what she started on Tuesday night by defeating fellow Czech Tereza Martincova after the resumption of their match.

The 30-year-old, who was beaten by Ashleigh Barty in last year's final, won 7-6 (7-1) 7-5 in one hour and 42 minutes.