The Italian is the youngest winner on the men's tour since Japan's Kei Nishikori won the Delray Beach Open at the age of 18 in 2008.
American great Pete Sampras said he does not expect any player to match Novak Djokovic's feat of winning the men's year-end world number one ranking seven times.
Rafael Nadal is the oldest title winner in the history of the clay-court tournament.
Federer, Nadal and Djokovic had made it near impossible for their peers to live, and thrive, amongst them. But the coming generation, which hasn't been as scarred by defeat at the hands of the Big 3, may make tennis unpredictable again.
Images from Day 3 of the 2022 Wimbledon Championships at the All England Lawn Tennis and Croquet Club in London, on Wednesday.
Images from Day 6 of the 2023 Australian Open at Melbourne Park on Saturday.
Ruud, who did not take kindly to Kyrgios's tweet then about how he had celebrated the victory, said the hot-headed 24-year-old was "completely crazy" and had behaved like an "idiot" on the court.
Djokovic did not drop a set en route to the final in Rome
Grigor Dimitrov is the latest player to be hit by injury in Melbourne
Nadal committed 30 unforced errors to Schwartzman's 17 and had his serve broken five times.
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.
Alexander Zverev booked his place in the last four of the ATP Finals where he will face world number one Novak Djokovic after a 6-2, 6-4 win over Hubert Hurkacz in Turin on Thursday.
'My arm has been -- I have had an issue there for quite a while now. It has gotten bigger in the last couple of weeks, so I'm just trying to protect it.'
Images from Day 7 of the 2022 French Open at Roland Garros in Paris on Saturday.
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.
Raducanu stormed into the third round of the Cincinnati Open
India had mixed fortunes at the US Open on Friday. Rohan Bopanna advanced to the men's doubles second round partnering Denis Shapovalov, but Leander Paes, teaming with Guillermo Duran, made a first-round exit.
Australian Nick Kyrgios produced another extraordinary performance to demolish compatriot Alex de Minaur 6-2, 6-3 at the Canadian Masters on Thursday, a day after stunning world number one Daniil Medvedev.
IMAGES from Day 9 of the French Open at Roland Garros in Paris on Monday.
Summary of sports events and persons who made news on Monday.
Ruthless Ruud topples Shapovalov to win Geneva Open.
Alexander Zverev overcame late nerves to beat world number one Novak Djokovic on Saturday and set up a final showdown with Daniil Medvedev at the ATP Finals.
Top seed Novak Djokovic beat Canadian Felix Auger-Aliassime 7-5, 7-6(1) to reach the semi-finals of the Italian Open on Friday and move within one win of 1,000 career victories.
Nadal had a solid start, but the 35-year-old struggled physically towards the end of the contest
Frenchman Benoit Paire was allowed to play in the Hamburg Open despite testing positive for COVID-19 because the 'rules are different' in Germany.
Nadal surpassed the haul of Roger Federer and Novak Djokovic.
British No 1 Cameron Norrie overcame a slow start to beat Frenchman Hugo Gaston 6-3, 7-5.
The Serbian had to save two set points in the first set before finding his groove to reach his 10th title clash in Rome and remain on course to win his 36th ATP Masters 1000 crown and overtake Rafael Nadal on the all-time list.
A summary of Friday's action at the US Open.
Giovanni Bartocci stood outside Billie Jean King National Tennis Center on Saturday shouting encouragement - and eventually employing a microphone and loudspeaker - as the Italian dismantled opponent Casper Ruud in straight sets on Court 17.
Sharan and Nys did not get any break-point in the 72-minute clash
Thiem, Wawrinka stay positive after defeats on return
Novak Djokovic threw his racket on the ground, drawing a warning from the chair umpire.
'On grass it's different, I feel that I can play kind of automatically, just the way I play, maybe play flatter than I play, so it's more convenient for me to play on grass.'
A round-up of Tuesday's action in the UEFA Champions League.
IMAGES from Day 1 of the Wimbledon Championships played on Monday.
Muguruza wins all-Spanish clash with Badosa at WTA Finals
IMAGES from Day 3 of the 2022 French Open at Roland Garros in Paris on Tuesday.
Federer beats Ruud, becomes oldest man to reach French Open 4th round since 1972