He's the first man this century to achieve the feat, and the second man ever after Ivan Lendl in 1985 and 1986.

The Italian improved to 6-10 in their series after triumphing at the Nitto ATP Finals to cap his 2025 season.

The world No. 2 saved a set point before emerging victorious Sunday in Turin, 7-6 (4), 7-5.

Which player will leave 2025 with three of the five biggest titles of the year, and which one will leave with two?

"Playing against Jannik on indoor court is one of the best or most difficult challenge[s] that we have in tennis right now," he said.

The Spaniard is 4-1 in their season series; the Italian has won 30 straight indoor matches.

The 23-year-old, already a WTA title-winner, is on the brink of something big—not just for herself, but for Turkish tennis.

The Spaniard eliminated Auger-Aliassime, 6-2, 6-4, in Saturday's second Turin semifinal.

"The tennis season is long, you have a lot of up and downs. For me there were not many ups," he said after losing to Felix Auger-Aliassime.

He went into the US Open ranked No. 27. Now, a little over two months later, he'll be a Top 5 player for the first time.

At 24, he's the youngest player EVER to achieve the feat.

The Canadian owned their head-to-head early, but the Spaniard has since posted four consecutive straight-set wins.

The Canadian sealed a spot in the semifinals against Carlos Alcaraz with a 6-4, 7-6(4) winner-take-all round-robin victory.

Lys is set to finish the season inside the Top 40, making her the top-ranked German.

The Spaniard is set to headline next week's event in Bologna, while his rival won't seek a three-peat with the host nation.

Will the 13th time finally be the charm for the underdog Aussie against the defending champion?

“I’m really grateful for everyone,” said the Spaniard after clinching the year-end top spot for the second time in his career.

And no other man will even come close to that this year.

The Australian was a picture of despair after a defeat to Lorenzo Musetti, but staged an unlikely resurrection in more ways than one.

Having also done it in 2022, the 22-year-old is now the second-youngest man ever to finish TWO years at No. 1.

Lys is joined by 19-year-old Tessa Brockmann, and will face teams from Turkey and Belgium.

Either the German or Canadian will advance out of the Bjorn Borg Group with the home favorite.

“If you want to win a big title…you're going to have to beat one of 'em, maybe both of 'em,” the American said in Turin.

His year started with a surprising cut—but over time, the ATP Finals qualifier brought back a more familiar look.

While his season will officially end in the round-robin phase of the ATP Finals, Shelton said there's still "a lot of things to be happy about" in 2025.

He also keeps his hopes of finishing the year at No. 1 alive.

The top-ranked Italian woman proved a popular figure as she took in the action between Alex de Minaur and compatriot Lorenzo Musetti.

All four players are in contention to advance out of the Jimmy Connors Group.

The Canadian rallied from a set down to stay alive in the Björn Borg round robin group.

The two tennis stars kicked off their vacation with a lip-sync to a 4 Non Blondes-Nicki Minaj mashup.

The former world No. 68, now ranked No. 275, hopes to compete in the Australian Open Asia-Pacific wildcard playoff later this month in Chengdu.

The Italian debutant rallied from 3-5 down in the third set to claim his first Nitto ATP Finals victory.

The Spaniard didn't just win a round-robin tussle with Taylor Fritz—he also won a chess match.

The semifinal spots are starting to take shape in Turin.

At 22, he's younger than any of the Big 3 were when they hit that number—and anyone since the 1980s, for that matter.

Odds are, you’ve watched his reels—ahem, cinematic art. Where is he taking us, and the sport, next?

Kroll reflected on the organizational challenges facing event directors, and the uncertain future of the venue.

And the first woman will be of no surprise to anybody.

The 22-year-old fielded a surprise question after his straight-sets win at the Nitto ATP Finals.

Other entrants in the winner's circle last week included former Top 50 player Yoshihito Nishioka and American veteran Mitchell Krueger.

It doesn’t take long to get desperate at a year-end championship.

The world No. 1 smashed a 12-year-old benchmark that was set by Serena Williams in 2013.

Tennis’s Minister of Happiness is welcoming her own bundle of joy this spring.

The seeds of today’s top rivalry were sown at an unlikely venue.

The couple went public at the 2021 NextGen ATP Finals, and have been together ever since.

Fritz had lost his last three meetings against Musetti but took advantage of a longer prep period for a 6-3, 6-4 win.

A select field and thrilling format make the season-ending championship a must-see event.