Second-seeded Estonian Anett Kontaveit and 2017 champion Garbiñe Muguruza of Spain were both eliminated from Wimbledon in surprisingly lopsided losses on Wednesday.

Kontaveit missed all of the grass-court events leading up to Wimbledon due to a bout with Covid-19, and that lack of match practice on tennis' trickiest surface was apparent in a 6-4, 6-0 second-round loss to 22-year-old German Jule Niemeier on Court 1.

The 97th-ranked Niemeier was playing in just her second Grand Slam but showed no nerves in dominating the proceedings against an out-of-sorts Kontaveit, who finished the match with just seven winners and a whopping 24 unforced errors.

The German used a combination of big serving and a wide variety of shot to dismantle her opponent in less than an hour.

"I love to play on grass. It fits my game. I love to play slice, drop shots, going to the net," Niemeier said afterward. "If I'm serving well, it's tough to break."