Top seed Daniil Medvedev powered his way into the Miami Open quarter-finals, along with Stefanos Tsitsipas and Andrey Rublev on Tuesday.
Medvedev won in straight sets against unseeded American Frances Tiafoe, hitting 24 winners.
Second seed Stefanos Tsitsipas won in straight sets against 24th seed Lorenzo Sonego, although the second went to a tie-break which the Greek dominated.
World number eight Andrey Rublev got past Marin Cilic in straight sets to book his last-eight spot.
Fifth seed Diego Schwartzman was the major casualty on Tuesday, losing to unseeded American Sebastian Korda in three sets. Seeds Josh Isner, Milos Raonic and Taylor Fritz also exited.
TOP SEED EASES INTO LAST EIGHT
World number two Medvedev was too good for Tiafoe in a 6-4 6-3 victory.
Medvedev improved his 2021 record to 17-2, sending down 11 aces with a dominant first-serve display while taking three of his four break points.
The 2021 Australian Open runner-up will meet seventh seed Roberto Bautista Agut in his maiden Miami Open quarter-finals appearance.
"It was definitely a tough match," the Russian said in his post-match on-court interview. "I am just looking forward to tomorrow. Roberto is a hell of a player.
"I feel like sometimes, when I have practised with him and played against him, that his ranking should be higher. There are reasons why it is not and I am going to try to do something with it tomorrow."
STEFANOS SIZZLES PAST SONEGO
Tsitsipas kept up his good form after making last month's Australian Open semi-finals, by booking his first Miami Open quarter-final appearance.
The Greek world number five defeated Sonego 6-2 7-6 (7-2) with a clinical performance to keep alive his dream of a maiden ATP Masters title.
Tsitsipas won in just over an hour and a half, proving too good on serve, having not offered up one break point and winning 89 per cent of first-serve points.
He was also too good with his return for the Italian, winning 35 per cent of the points on Sonego's serve.
The Greek will take on Polish 26th seed Hubert Hurkacz in the last eight, after he knocked out 12th seed Raonic 4-6 6-3 7-6 (7-4).
FIFTH SEED TOPPLED BY KORDA
World number nine Schwartzman was knocked out in three sets by Korda 6-3 4-6 7-5 as he continues his super run.
Florida resident Korda, 20, reached his maiden ATP 1000 quarter-final, showing fight after the Argentinian raised his game in the second set, winning after an early break in the last.
Rublev made light work of former US Open champion Marin Cilic, triumphing 6-4 6-4.
Bautista Agut got past 18th seed Isner 6-3 4-6 7-6 (9-7), while Jannik Sinner defeated Alexander Zverev's conqueror Emil Ruusuvuori 6-3 6-2.
Alexander Bublik, seeded 32nd, sent down 23 aces as he beat Taylor Fritz 6-7 (5-7) 6-3 6-4.
Sinner guides Italy to back-to-back Davis Cup triumphs
Jannik Sinner capped his outstanding year by helping Italy retain the Davis Cup, beating Tallon Griekspoor to ensure Italy downed the Netherlands 2-0 in Sunday's final.
World number one Sinner overcame Griekspoor 7-6 (7-2) 6-2 after Matteo Berrettini had registered a 6-4 6-2 win over Botic van de Zandschulp in the opener.
Sinner saved the only two break points of the first set as Griekspoor put up a fight, but the Italian put on a show in the tie-break to inch ahead.
Griekspoor hit back after giving up an early break in the second set, but Sinner immediately responded with two further breaks, with the Dutchman double-faulting for the first then wildly miscuing with a backhand for the second.
Sinner was untroubled from then on, sealing a triumphant end to a spectacular season.
The Italian has only dropped one set throughout that streak, finishing a year that saw him win the Australian Open, US Open and ATP Finals with a 73-6 singles record.
Data Debrief: Sensational Sinner leads the way
This has been a truly remarkable year for Sinner, who has become the first man in the Open Era to win at least one set in every match throughout a season since Roger Federer in 2005.
His victory ensured Italy became the first team to retain the Davis Cup since the Czech Republic triumphed in 2012 and 2013.
Italy also captured the Billie Jean King Cup earlier this week, and they are just the third nation to claim both trophies in the same season in the last 30 years, after the Czech Republic in 2012 and Russia in 2021.
Sinner and Berrettini send defending champions Italy into Davis Cup final
Jannik Sinner's victory over Alex de Minaur clinched Italy's place in another Davis Cup final, with Matteo Berrettini also victorious as the defending champions beat Australia 2-0.
Italy won the Davis Cup for the first time since 1976 last year, and they will have an opportunity to defend their crown against the Netherlands on Sunday.
Former Wimbledon finalist Berrettini got the ball rolling with an entertaining 6-7 (6-8) 6-3 7-5 victory over Thanasi Kokkinakis, not surrendering a break after losing the opener in a tie-break.
That teed up Sinner to close out Italy's victory, with the world number one overcoming De Minaur 6-3 6-4, the same scoreline he beat the Australian by at the ATP Finals earlier this month.
Speaking after his victory in Malaga, Sinner said: "It means a lot. It was a tough encounter, playing Alex. We know each other quite well now, so I have to be very careful every time.
"It's a very tough challenge for me, so I was looking forward to this one. Obviously, it helped a lot that Matteo won the singles today. He played amazing tennis. It was very high quality.
"Hopefully, this can give us some confidence for [Sunday]. It's going to be a very difficult and tough day for us and also the Netherlands."
Data Debrief: Back-to-back for Italy
Italy's men are looking to follow in the footsteps of their female counterparts, who won the Billie Jean King Cup earlier this week.
They are just the third nation in history to make back-to-back finals at both the Davis Cup and the Federation/Billie Jean King Cup, after the United States (1963-64, 1978-79, 1981-82 and 1990-91) and Australia (1963-64 and 1964-65).
Djokovic appoints Murray as coach for Australian Open
Novak Djokovic has announced his long-term former rival Andy Murray as his coach for the Australian Open in 2025.
Murray, a three-time Grand Slam winner, announced his retirement earlier this year and played his final match at the Paris Olympics in August.
He will join Djokovic's team in the off-season and coach him through the opening grand slam of the year, which begins on January 12.
This will be Murray's first coaching role since retiring following a 19-year career.
"We played each other since we were boys. 25 years of being rivals, of pushing each other beyond our limits," Djokovic said in a video on social media.
"We had some of the most epic battles in our sport. They called us game changers, risk-takers, history makers.
"I thought our story may be over - turns out it has one final chapter.
"It's time for one of my toughest opponents to step into my corner. Welcome onboard coach, Andy Murray."
Djokovic failed to win a major title for the first time since 2017, though he did clinch a long-awaited Olympic gold medal in Paris.
The Serb is currently level with Margaret Court for the most major singles titles by any player. He has a good record in Australia though, winning 10 times in Melbourne, beating Murray in four of those finals.
Murray, who beat Djokovic to win the US Open title in 2012 and Wimbledon the following year, says he hopes they can achieve success together.
"I'm going to be joining Novak's team in the off-season, helping him to prepare for the Australian Open," Murray said.
"I'm really excited for it and looking forward to spending time on the same side of the net as Novak for a change, helping him to achieve his goals."
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