Defending ATP Finals champion Novak Djokovic has pulled out of the season-ending event in Turin through injury, the Serbian said on Tuesday.
Images from the men's singles fourth round matches on Day 8 of the 2023 Australian Open in Melbourne on Monday.
Rangy 19-year-old Mensik, the 2022 boy's singles finalist at Melbourne Park, sealed the match in style with a searing forehand winner to push the three-times Grand Slam finalist and sixth seed to the exit.
A sluggish Carlos Alcaraz was beaten 6-7(3), 6-3, 6-4 by Alexander Zverev on the his debut at the ATP Finals on Monday to continue his end-of-year slump with a third straight defeat.
'We heard it was like the Hollywood of mixed doubles.'
It was Roger Federer's fastest defeat since losing to Franco Squillari in 54 minutes in Sydney in 2003.
One of the rising stars of the men's tour, Fonseca shocked ninth seed Andrey Rublev on his Grand Slam main draw debut at the Australian Open in January and became the youngest Brazilian to win an ATP tournament at the Argentina Open the following month.
Third-ranked Carlos Alcaraz recorded a 7-5, 6-2 win over seventh-seeded Karen Khachanov of Russia to advance to the semifinals of the China Open on Monday in Beijing.
Friday's match was a straight shootout for a last-four place, with world number five Rublev the favourite having won his four previous matches against Ruud.
Rohan Bopanna and his Australian partner Matthew Ebden lost to Russian pair of Andrey Rublev and Karen Khachanov.
Italian top seed Matteo Berrettini marked himself down as a genuine Wimbledon threat after beating Britain's Cameron Norrie 6-4, 6-7(5), 6-3 to win the Queen's Club title on Sunday.
Argentinian Francisco Comesana stunned Australian Open finalist and world number two Alexander Zverev on Friday with a 4-6, 6-3, 6-4 win in the quarter-finals of the Rio Open, the biggest win of his career so far.
It marks Osaka's first WTA 1000 semi-final since Miami in 2022, as the Japanese former world number one needed just over an hour to secure victory over the 10th seeded Svitolina.
The 18-year-old captured the Argentina Open title with a in over home favourite Francisco Cerundolo in the final.
Tsitsipas, who triumphed at the Monte Carlo Country Club in the last two editions, was never in the mix against Fritz
Serena was rumoured to have dated Dimitrov in the past, adding an extra layer of intrigue to the occasion.
Medvedev beats Rublev in Dubai for hard-court hat-trick
An off-colour Alcaraz lost 6-1, 7-5 to Norway's Casper Ruud in his opening match on Monday and the 21-year-old cancelled a public training session the following day.
In the evening session, men's third seed Alexander Zverev and women's fourth seed Jessica Pegula were forced off the court mid-match due to rain and the threat of lightning.
Sweltering heat gripped the second-round action at the US Open on Wednesday
Italy's Matteo Arnaldi produced a sensational performance to take out sixth seed Andrey Rublev and reach the last 16 of the French Open on Friday.
Iga Swiatek was the latest top player to suffer an upset loss in Montreal as the Wimbledon champion
Rafael Nadal gave Russian teenager Andrey Rublev a tennis lesson on Wednesday, racing into the semi-finals of the US Open with a ruthless 6-1, 6-2, 6-2 win that cleared the path for a possible showdown with rival Roger Federer.
Top seed Carlos Alcaraz of Spain and No. 8 seed Hubert Hurkacz of Poland will clash in the ABN Amro Open semi-finals on Saturday after both posted victories on Friday in Rotterdam, Netherlands.
Lehecka struck eight aces and converted four of eight break chances to secure the first Top 3 win of his career.
Jannik Sinner's bid to win back-to-back Halle Open titles was ended on Thursday
Novak Djokovic secured a semi-final place at the ATP Finals with a 6-3, 6-2 victory over Russian Andrey Rublev on Wednesday, his 50th match win of the year, while Stefanos Tsitsipas withdrew from the tournament due to an elbow injury.
No. 1 seed Carlos Alcaraz of Spain was pushed to three sets before finishing off Dutch wild card Botic van de Zandschulp in the first round of the ABN AMRO Open.
Top seed Carlos Alcaraz withstood a charge from qualifier Luca Nardi for a 6-1, 4-6, 6-3 victory in the second round of the Qatar ExxonMobil Open in Doha on Wednesday.
The 35-year-old Serb was sent home from Australia on the eve of last year's event after a row about his COVID-19 vaccination status.
Zverev and Rublev among dark horses for French Open
Already assured of a spot in the top 10 on Monday, the 23-year-old Jack Draper hoped to make his first foray into a Masters 1000 final a triumphant one when he meets Dane Holger Rune at Indian Wells on Sunday.
Defending US Open champion Jannik Sinner continued his stellar run at the hardcourt Grand Slams with a 6-1, 6-1, 6-1 hammering of Kazakh 23rd seed Alexander Bublik on Monday to make the quarter-finals at Flushing Meadows.
'You cannot imagine, one player is going to die and then they're going to see'
At the Hong Kong Tennis Open, top-seeded Andrey Rublev of Russia pocketed his 15th career title with a 6-4, 6-4 win over Finland's Emil Ruusuvuori.
Gael Monfils thrilled the Roland Garros crowd with his 12th five-set victory at the French Open on Tuesday before revealing that he does not enjoy having to dig himself out of deep holes at Grand Slams.
Shapovalov and Pospisil, who have shouldered the burden through four ties in La Caja Magica this week, combined to beat Andrey Rublev and Karen Khachanov 6-3, 3-6, 7-6(5).
Andrey Rublev and Alexander Zverev clinched the Laver Cup for Team Europe with a 6-2, 6-7(4), 10-3 win over Team World's Reilly Opelka and Denis Shapovalov on Sunday in Boston.
Australian Open organisers have issued a reminder to players and their entourages about their policy on "inappropriate flags" after a video emerged showing Novak Djokovic's father posing for pictures with fans holding Russian flags.
Images from the men's singles action at the US Open on Sunday.
