MIAMI GARDENS, United States, March 26, 2023 (BSS/AFP) - Hubert Hurkacz saved five match points as he fought back to beat Thanasi Kokkinakis in a three and a half hour epic while fourth-seed Daniil Medvedev got his Miami Open bid under way with an easy win on Saturday.

Hurkacz was pushed all the way by the Australian lucky loser Kokkinakis before emerging with a 6-7 (10/12), 7-6 (9/7), 7-6 (8/6) victory.

The Aussie had shown his mettle by saving six set points as he won the first-set tie-break and Hurkacz, the 2021 Miami champion, saved three match points in the second-set tie-break and another two in the final-set breaker.

"It's tough to explain for me. I was just trying to stay in there and compete, play some good shots," said Hurkacz, the eighth seed at Hard Rock Stadium.

Kokkinakis was on serve at 6-4 up in the final set tie-break but Hurkacz produced a stunning winner up the line and that shot finally turned the tide decisively towards the Pole, who won the next three points to settle the contest.

The three hours, 31 minutes contest was the longest best-of-three ATP match of the year so far.

In contrast, Indian Wells runner-up Medvedev barely broke sweat beating Spanish clay-court specialist Roberto Carballes Baena 6-1, 6-2 in just 62 minutes.

The Russian's loss to Carlos Alcaraz in the Indian Wells final had ended his 19-match winning streak, but he was totally dominant as he struck 18 winners to the Carballes Baena's five.

Medvedev made use of the drop shot, which Alcaraz had used to good effect against him last week, and joked that he had been trying to emulate the world number one.

"I thought I needed to use that shot more. I've always liked drop shots but it's not a weapon in my game that I'm going to use 50 times a match," he said.

- Looking forward -

"You need to have confidence in the shot and today it worked pretty well," he said.

"I'm happy with my first match, solid performance, looking forward for next matches," he added.

Medvedev became the first player to reach 25 wins this season on either the ATP or WTA tours.

Americans Christopher Eubanks and Mackenzie McDonald produced upset wins to book their places in the third round.

Eubanks pulled off the biggest win of his career so far to beat 17th-ranked Croatian Borna Coric 6-3, 4-6, 6-2 while McDonald beat Italy's Matteo Berrettini 7-6 (10/8), 7-6 (7/5).

The 26-year-old Eubanks, ranked 119th in the world, recovered from a first set where the Croat looked in firm control to delight the home crowd.

"I honestly felt like I wasn't playing that bad. I just wasn't executing," Eubanks said. "I felt like my game plan was right. I wanted to be disruptive. I wanted to get the net. I just wasn't executing on shots. I can kind of live with that.

"So I said, 'Well, I feel like I'm playing the right way. If I just continue to try it, hopefully the execution errors will lessen and I'll be able to find my range.' I was able to do that."

McDonald won a thriller against 23rd-ranked Berrettini, edging both tie-breaks and surviving two set points in the 12th game of the second set.

Czech Jiri Lehecka's impressive form continued as he took out 18th seed Lorenzo Musetti.

The 21-year-old, who reached his first Grand Slam quarter-final in Australia, triumphed 6-4, 6-4 to reach the third round of a Masters 1000 event for the first time.

Two-time Grand Slam runner-up Stefanos Tsitsipas advanced into the third round after France's Richard Gasquet withdrew with an ankle injury.

Greek number two seed Tsitsipas, will next face Chile's Cristian Garin, who beat Argentine Sebastian Baez 7-6 (7/2), 6-3.

Tsitsipas was runner-up at this year's Australian Open and the 2021 French Open but lost his opening round match at Indian Wells earlier this month.