Russian seventh seed Daniil Medvedev, the 2023 Miami champion who arrived this year fresh off a run to the Indian Wells semi-finals, crashed out at the first hurdle as he fell 6-2, 6-3 to Spaniard Jaume Munar.
It was Sumit's second Challenger title of his career
With this win, he has improved his record in Rome to nine wins and four losses.
Alexander Zverev cruised past Frenchman Lucas Pouille in straight sets in the first round of the Australian Open on Sunday.
It was Alexander Zverev's first opening-round defeat at a Grand Slam since Wimbledon in 2019 and leaves him still searching for a first major after 38 attempts.
As the spotlight shines on Carlos Alcaraz's title defence and Novak Djokovic's pursuit of a record 25th Grand Slam, a determined group of challengers is quietly preparing to shake up the draw.
Carlos Alcaraz heads to Paris for his French Open title defence having laid down a marker with his victory over world number one Jannik Sinner in Rome
Jannik Sinner is primed for a Wimbledon title tilt after picking up his first grasscourt trophy at Halle
Rafael Nadal overcame a temporary blip on his way to victory at the ATP Cup on Saturday
Jannik Sinner won his maiden Grand Slam title at the Australian Open on Sunday.
With Federer certain, young Austrian Dominic Thiem is third in the ATP race to London, followed by Stan Wawrinka, Alexander Zverev, Djokovic, world number one Andy Murray, and Belgium's David Goffin.
Unheralded Igor Kunitsyn upset former world number one Marat Safin 7-6, 6-7, 6-3 in an all-Russian Kremlin Cup final to clinch his maiden title.
18-year-old Carlos Alcaraz of Spain became the youngest to clinch an ATP 500 title at the same event on Sunday when he defeated Diego Schwartzman in the final of the Rio Open.
Greece's Tsitsipas battled back from 3-5 down in the third set to eliminate Medvedev with a 6-3, 6-7(11), 7-6(1) win to set up a showdown on Friday with Rublev for the Red Group's other semi-final spot.
World number one Novak Djokovic began his quest for a sixth title at the season-ending ATP Finals with a 7-6(4), 6-2 victory over Norway's Casper Ruud in their round robin encounter in Turin on Monday.
Their Miami triumph was their second at the ATP Masters 1000 level after their 2023 title run in Indian Wells
Diagnosed as deaf at the age of two, Lee Duck-hee cannot hear calls from the line judges or the umpire and relies on signals and gestures for the information.
Novak Djokovic may have played at the Madrid Open for the last time after crashing out
Tomic had to battle hard against the top seed, saving four match points in a tense final set before wrapping up the match in two hours and 15 minutes.
Hady Habib is the first man representing Lebanon to win a singles main draw match at a Grand Slam in the professional era.
Only once in 16 previous appearances has Federer not survived the group stage, back in 2008. IMAGES from the ATP Finals played at The O2 Arena in London on Sunday
India's Yuki Bhambri and his American partner Robert Galloway secured a hard-fought victory but Rithvik Bollipalli's search for his maiden win in a Grand Slam main draw continued in the French Open men's doubles opening round, in Paris, on Wednesday.
Rafael Nadal teamed up with Norwegian Casper Ruud to register a 6-1, 6-4 win over second seeds Guido Andreozzi and Miguel Reyes-Varela on the Swedish clay.
Daniil Medvedev fired Russia to victory in the $7.5 million ATP Cup with a dominant performance against Italy in Melbourne on Sunday.
The Dane revealed he had taken notes from how Novak Djokovic beat Alcaraz in the Olympic final at Roland Garros.
Here is a quick glance of all the highs and lows from Nadal's stupendous career:
Unseeded Alejandro Tabilo beat twice champion Novak Djokovic 6-3, 6-4 in the second round of the Monte Carlo Masters on Wednesday to maintain a remarkable 100 percent record win record over the 24-times major winner.
The opening match in the Pete Sampras Group produced a feast of stylish backhands from both players but it was Dimitrov, the first Bulgarian to qualify for the tournament in its 48-year-old history, who overcome some late jitters to prevail.
Guillermo Canas won his first tournament since a 15-month doping ban when he claimed the Brazil Open.
Tsitsipas had lost all five previous matches against the Russian, but turned the tables in impressive fashion.
Sumit Nagal registered a straight sets victory against Canada's Gabriel Diallo on his debut at the Miami Open.
Dominic Thiem stayed very much in the mix at the ATP World Tour Finals with a 6-3, 1-6, 6-4 victory over mercurial Frenchman Gael Monfils at the O2 Arena on Tuesday.
French Open and Wimbledon champion Alcaraz, who won both of his previous meetings with Sinner this year, recovered from a slow start to wrap up victory in three hours, 21 minutes and improve his head-to-head record with the Italian to 6-4.
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.
World No 1 Novak Djokovic was beaten by Tomas Machac in the Geneva Open semi-finals.
Novak Djokovic was stunned 7-6(4), 6-2 by Matteo Berrettini in the Qatar Open first round on Tuesday as the Italian enjoyed his first win over the former world number one.
Novak Djokovic is one win away from a 100th career singles title after breezing past Grigor Dimitrov 6-2, 6-3 on Friday to reach the Miami Open final, where he will face either third seed Taylor Fritz or rising Czech Jakub Mensik.
A season that produced the biggest shake-up in men's tennis for more than a decade draws to a close next week with three ATP World Tour Finals debutants striving to sign off breakthrough years with a large exclamation mark.
Alexander Zverev into ATP Finals semis after straight sets win over Carlos Alcaraz
Rohan Bopanna and his Australian partner Matthew Ebden advanced to the quarterfinals
