GB's Pinnington Jones stuns world number 20 Cobolli

Jack Pinnington-Jones secured his biggest career win at the ATP Dallas Open

Great Britain's Jack Pinnington Jones claimed the biggest win of his career as he stunned world number 20 Flavio Cobolli at the Dallas Open.

Pinnington Jones, ranked 181st in the world, came through qualifying to reach the main draw of an ATP 500 event for the first time.

He then stunned fourth seed and Wimbledon quarter-finalist Cobolli 6-2 6-2 in just 54 minutes.

Pinnington Jones, who largely plays on the lower-tier Challenger tour, lost to the same opponent in the second round of last year's Wimbledon.

The 22-year-old will face Australia's James Duckworth or American wildcard Eliot Spizzirri next.

Pinnington Jones claimed his first match win at a Grand Slam with victory over Tomas Martin Etcheverry at Wimbledon last year.

A close friend of British number one Jack Draper, Pinnington Jones completed his junior season at Texas Christian University in May but opted against returning for a final year in order to pursue a full-time tennis career.

Elsewhere, Elisabetta Cocciaretto progressed to the last 16 of a WTA 1000 event for the first time with a dominant win over Coco Gauff at the Qatar Open.

Italian Cocciaretto saved four of the five break points she faced in a 6-4 6-2 victory over French Open champion Gauff.

Elena Rybakina won her first match since her Australian Open triumph with a 6-2 6-4 victory over China's Wang Xinyu, while world number two Iga Swiatek breezed past Janice Tjen 6-0 6-3.

Britain's Emma Raducanu retired from her first-round match against Camila Osorio earlier in the week.