Valentin Vacherot made history on Sunday, becoming just the third qualifier in ATP Tour history to win a Masters 1000 title.
The Monegasque star was ranked 204 in the world heading into the tournament, making him the lowest-ranked player ever to win a Masters 1000 tournament.
Vacherot defeated the likes of Novak Djokovic and Holger Rune on his way to the title, rallying from a set down on six occasions.
The 26-year-old has now risen to world number 40 after winning his maiden ATP Tour title.
He joins seven other ATP players who have also won their first Tour-level title in 2025.
Jakub Mensik
Jakub Mensik produced arguably the tournament performance of the season to win his first ATP Tour title at the Miami Open in March.
The Czech star was aged just 19 and an unseeded player. However, these factors did not prevent him from defeating Jack Draper and Taylor Fritz on his way to the final.
In the final, Mensik defeated 24-time Grand Slam champion Novak Djokovic, 7-6, 7-6.
Flavio Cobolli
Top 20 Italian star Flavio Cobolli won his first ATP Tour title at the Bucharest Open in April.
The Italian third seed defeated Richard Gasquet, Filip Misolic, and Damian Dzumhur on his way to the final, before defeating top seed Sebastien Baez in the final, 6-4, 6-4.
Just over a month later, Cobolli added to his title collection, winning the Hamburg Open.
Despite being unseeded at the event, Cobolli lost just two sets in five matches, defeating third seed Andrey Rublev 6-2, 6-4 in the final.
Joao Fonseca
Young Brazilian prodigy Joao Fonseca captured his maiden ATP Tour title at the Buenos Aires Open in February, defeating Argentine Francisco Cerundolo in the final.
As per the BBC, Fonseca became the first player born in 2006 to win an ATP Tour title, and the fourth youngest since 2000, after Rafael Nadal, Kei Nishikori and Carlos Alcaraz.
After the final, Fonseca said: “Even in Argentina, there are Brazilians cheering for me. That’s amazing,” Fonseca told the crowd afterwards.
“What I’m living is just unbelievable. I want to thank my friends and sponsors for helping me achieve my dream – to just play tennis.”
Gabriel Diallo
Young Canadian star Gabriel Diallo produced a stunning run to capture the Libema Open title in June.
The 24-year-old, unseeded at the event, defeated three seeds on his way to the final: Jordan Thompson, Karen Khachanov and Ugo Humbert.
In the final, he defeated Belgian star Zizou Bergs, 7-5, 7-6.
Jenson Brooksby
Jenson Brooksby has enjoyed a remarkable 2025 season, rising over 1000 places in the ATP rankings.
In April, the American won his maiden ATP Tour title at the Houston Open, defeating compatriot Frances Tiafoe in the final.
As a result, Brooksby rose 335 places in the rankings.
The 24-year-old is now ranked 56 in the world. His career high is 33, which he achieved in June 2022.
Tomas Machac
Czech star Tomas Machac captured his first ATP Tour title at the Mexican Open: his third tournament of the season.
Machac defeated Jakub Mensik, Learner Tien and Brandon Nakashima on his way to the final, before beating Spanish star Alejandro Davidovich Fokina in the final.
Machac, who has a career-high ranking of 20, has since fallen to 30 in the world.
Alexandre Muller
Alexandre Muller was the first player to win a maiden ATP Tour title in 2025.
Muller, who was unseeded, defeated Arthur Fils and Jaume Munar on his way to the final, before securing the title against former US Open finalist Kei Nishikori, 2-6, 6-1, 6-3.
Muller is now ranked 43rd in the world, and is set to play Miomir Kecmanovic on Monday in the first round of the Stockholm Open.
