Draper exits Miami Open but Boulter through

British number two Jack Draper was knocked out of the Miami Open in the second round with a 7-6 (7-3) 7-6 (7-0) defeat by Reilly Opelka.

The 24-year-old lost two tie-breaks to the big-serving American, who wrapped up the win inside 93 minutes.

Draper had headed into the tournament after an impressive run to the quarter-finals at Indian Wells - featuring a win over Novak Djokovic - following nearly eight months out with an arm injury.

However, he struggled against the powerful 6ft 11in Opelka, ranked 67th in the world, who fired down 25 aces and 47 winners.

"It's a difficult one," said Draper, who has never made it beyond the second round in Miami. "Obviously I haven't played a load of tennis, it's still the very start of my comeback from my injury, so it's going to take time.

"I've just got to keep on chipping away with my team, trying to do all the right things, practising well. The thing I'm looking forward to the most is earning the right to get momentum again."

Defeat leaves Draper at risk of slipping further down the rankings going into the clay-court season having surrendered his spot as British number one to Cameron Norrie this week.

World number one Carlos Alcaraz, however, won a first meeting with 19-year-old Brazilian rising star Joao Fonseca 6-4 6-4 to set up a third-round match against Sebastian Korda.

Elsewhere, Katie Boulter progressed to the third round at Miami Gardens when Denmark's Clara Tauson retired during their match through injury.

The British number three let a 5-3 lead slip as Tauson won the first-set tie-break 7-4, before she battled back to take the second set 6-4.

Boulter won the first game of the third set only for Tauson to decide she could not continue.

"It was a complete battle - some ugly tennis and ugly conditions as well, but you have to find a way," Boulter said.

"Unfortunately she couldn't finish but it is what it is. It's never the way you want to win, but happy to be through to the next round."

Meanwhile, Florida-born Coco Gauff beat Italy's Elisabetta Cocciaretto 3-6 6-4 6-3 - a week after she pulled out of Indian Wells with a nerve-related injury to her left arm.

"This week made me realise how much I love this sport - even when it's tough, I enjoy the ups and downs of the journey," said the world number four, who served 11 double faults but came from a set down to claim victory on her third match point.

World number one Aryna Sabalenka was tested against unseeded Ann Li, taking one hour 42 minutes to grind out a 7-6 (7-5) 6-4 victory.

The defending champion created 15 break points but only managed to take three of them against her American opponent.