From Naomi Osaka to Maria Sharapova, shocking upsets at Wimbledon'19 round one

Austrian Dominic Thiem exited in the first round for the third time in six visits, beaten by American Sam Querrey.

Thiem, the fifth seed, reached the French Open final for the second year running last month but his heavy topspin game is less effective on grass and Querrey took full advantage to win 6-7(4), 7-6(1,) 6-3, 6-0.

World number two and second seed Naomi Osaka lost 7-6(4), 6-2 to dangerous Kazakh Yulia Putintseva who had also got the better of her in their recent match in Birmingham - a defeat that effectively cost Osaka the number one ranking.

US Open and Australian Open champion Osaka appeared close to tears when she spoke to the media later.

Germany's Zverev was defeated by Czech qualifier Jiri Vesely and was sent packing, losing 4-6, 6-3, 6-2, 7-5.

The 22-year-old seemed on course for victory when he won the first set but the powerfully-built Vesely roared back.

Zverev slipped when serving at 5-6, 15-30 in the fourth set, handing his opponent two match points, and netted a backhand volley to seal his fate.

Five-time champion Venus Williams lost to 15-year-old Cori Gauff in the first round which might be the biggest upset of this year's tournament.

Gauff, the youngest woman ever to survive the qualifying tournament, played like a seasoned performer as she clinically beat the 39-year-old great 6-4, 6-4 to earn a standing ovation from an enchanted Court One crowd.

Greek Tsitsipas entered the tournament tipped as the man most likely to challenge the authority of the big three but was beaten 6-4, 3-6, 6-4, 6-7(8), 6-3 by 89th-ranked Italian Thomas Fabbiano who produced an inspired display on Court Two.

Tsitsipas saved two match points in the fourth-set tiebreak but Fabbiano was relentless and when he broke in the seventh game of the decider with a cruel net cord, it was clear it was not going to be Tsitsipas's day.

Russian Sharapova, who won the title in 2004, was trailing 4-6, 7-6(4), 5-0 to Pauline Parmentier of France when she retired injured.

The 32-year-old former world number one, now ranked 80, only returned from a right shoulder injury last month, although the problem this time was with her arm.

"I've had a history of a tendon problem in my left forearm and it flared up in the first set," she told reporters.

It was her second successive first-round exit at Wimbledon.