Jannik Sinner (born 16 August 2001) is an Italian professional tennis player. He is currently ranked world No. 1 by Association of Tennis Professionals (ATP), and was the year-end No. 1 in 2024. Sinner has won 30 ATP Tour-level singles titles, including five majors, ten Masters and two ATP Finals titles. He led Italy to back-to-back Davis Cup crowns in 2023 and 2024.
Sinner began playing in professional men's events aged 16 and became one of the few players to win multiple ATP Challenger Tour titles at age 17. In 2019, he won the Next Gen ATP Finals and the ATP Newcomer of the Year award, and two years later became the first player born in the 2000s to enter the top 10 in rankings. Sinner won his first ATP Masters 1000 title at the 2023 Canadian Open and finished the season as runner-up at the ATP Finals. At the 2024 Australian Open, Sinner defeated world No. 1 Novak Djokovic followed by Daniil Medvedev in a five-set final to win his first major title. He went on to win both the US Open and the ATP Finals to finish the year at the top of the ATP rankings, becoming the first Italian player to reach world No. 1.
In 2025, Sinner reached the finals of all four majors, winning at the Australian Open and Wimbledon, and losing to Carlos Alcaraz in a five-set epic at the French Open as well as at the US Open. In 2026, Sinner defended his Wimbledon title and won a record five consecutive ATP Masters 1000 titles, becoming the second and youngest player to complete the Career Golden Masters since the series started in 1990 (at old).
Early life and background Jannik Sinner was born 16 August 2001 to Hanspeter Sinner and Siglinde Rauchegger in Innichen, in the Northern Italian province of South Tyrol. His native language is German. He grew up in the town of Sexten in the Dolomites, the family hometown, where his father worked as a chef and his mother as a waitress at a ski lodge. He has an older adopted brother, Mark, who was born in Russia in 1998. Sinner began skiing at age three and competed in his first ski races at the age of eight. He began playing tennis at age seven. He was one of Italy's top junior skiers from seven to 12 years old, winning a national championship in giant slalom at age seven in 2008 and becoming a national runner-up at age 11 in 2012.
While training in skiing, Sinner gave up tennis for a year at age seven before his father pushed him to return to the sport. When he resumed playing, Heribert Mayr was his first regular coach. Sinner's grandfather drove him to Tennis San Giorgio early in the morning, where Sinner had to take individual lessons with Mayr as no child his age there was at his level and he was much faster than the older children. Nonetheless, tennis was still only his third priority, behind skiing and football. In the mornings he competed in ski races and in the afternoons he played football matches for AFC Sexten (Youth).
At age 13, Sinner gave up skiing and football in favour of tennis due to his physique; he was tall, thin, and weighed only . He also preferred competing in an individual sport directly against an opponent and having more control over the outcome. He moved to Bordighera on the Italian Riviera, Liguria, on his own to train at the Piatti Tennis Center under Riccardo Piatti and Massimo Sartori, a decision his parents supported. There, Sinner lived with the family of Luka Cvjetković, one of his coaches, and later moved out to share an apartment with two boys. Before he began tennis training with Piatti full time, he had been playing only twice a week. He obtained his high school certificate at the Walther Institute, a private business and technical school in Bolzano.
Junior career Sinner began playing tennis on the ITF Junior Circuit. In spite of having limited success, he moved mainly to the professional tour following the end of 2017. He never played the main draw of any high-level Grade 1 events in singles, and did not play any of the junior Grand Slam tournaments. The only higher-level Grade A tournament he entered was the Trofeo Bonfiglio.
Sinner followed up an opening round loss at Italy's Grade A tournament in 2017 with a quarterfinal in 2018, the only junior event he played that year. Because he entered so few high-level tournaments, Sinner's career-high junior ranking was a relatively low No. 133.
Professional career 2018: Pro debut Sinner began playing on the ITF Men's Circuit in early 2018. With his low ranking he could initially be directly accepted into only ITF Futures events. Nonetheless, he began receiving wild cards for ATP Challenger Tour events, the second-tier tour run by the Association of Tennis Professionals (ATP), in the second half of the year. His only ITF title of the year was in doubles, and he finished the season ranked No. 551.
2019: NextGen champion, top 100 Sinner won his first ATP Challenger title in Bergamo in February 2019 at the age of 17 years and 6 months, despite entering the tournament with no match wins at the Challenger level. He became the first person born in 2001 to reach a Challenger final, and the youngest Italian to win a Challenger title in history. With the title, he rose over 200 spots in ATP rankings up to No. 324.
After his first two ITF Futures titles, Sinner entered his first ATP tournament at the Hungarian Open as a lucky loser, where he notched his first tour-level win over home wild card Máté Valkusz. The next week, he reached his second ATP Challenger final in Ostrava, finishing runner-up to Kamil Majchrzak.
During the second half of the season Sinner played more often on the ATP Tour than the Challenger Tour. His first ATP Masters 1000 victory came at the Italian Open against Steve Johnson, and he broke into the top 200 with his next ATP win at the Croatia Open Umag in July. The next month, he won a second ATP Challenger title in Lexington to become one of just eleven 17-year-olds to have won multiple Challenger titles. After losing in qualifying at Wimbledon, Sinner qualified for his first Grand Slam tournament main draw at the US Open. He lost his debut match to No. 24 Stan Wawrinka.
Sinner had a strong finish to the season. As a wild card at the European Open, he became the youngest player in five years to reach an ATP semifinal. Along the way, he knocked off top seed and world No. 13 Gaël Monfils for his first career top 50 victory. This performance helped him break into the top 100 for the first time one week later. At the end of the season, Sinner qualified for the 2019 Next Gen ATP Finals as the Italian wild card and the lowest seed. He won in his round robin group with victories over Frances Tiafoe and Mikael Ymer, losing only to Ugo Humbert.
After defeating Miomir Kecmanović in the semifinals, Sinner upset top seed and world No. 18 Alex de Minaur in straight sets to win the title. He played one last event in Italy the following week, winning a third Challenger title in Ortisei. Sinner finished the year at world No. 78, becoming the youngest player in the year-end top 80 since Rafael Nadal in 2003. He was also named ATP Newcomer of the Year. and received the Gazzetta Sport Award for Best Performance of the Year for his win over de Minaur in the Next Gen ATP Finals.
2020: First ATP title, top 50 Early in the year Sinner made the second round of the 2020 Australian Open, recording his first major match win over home wild card Max Purcell before losing to Márton Fucsovics. As a wild card at the Rotterdam Open, he earned his first top 10 victory against world No. 10 David Goffin.
Following the ATP Tour shutdown due to the COVID-19 pandemic, Sinner had a successful restart to the season. Although he lost his opening round match to Karen Khachanov at the US Open, he fared better in Europe. He reached the third round at the Italian Open, highlighted by a victory over world No. 6 Stefanos Tsitsipas. He then progressed to become the youngest quarterfinalist at the French Open since Novak Djokovic in 2006, and the first to make the quarterfinals on debut since Rafael Nadal in 2005. During the tournament, he defeated Goffin again as well as US Open runner-up and world No. 7 Alexander Zverev before losing to Nadal.
After a semifinal at the Cologne Championship, where he lost to Zverev, Sinner closed out the season by winning the Sofia Open for his first ATP title. During the event, he defeated Next Gen rival Alex de Minaur and then Vasek Pospisil in the final. He became the youngest Italian tour-level champion in the Open Era and the youngest player overall to win an ATP title since Kei Nishikori in 2008.
Sinner finished the year ranked world No. 37.
2021: Four titles, first Masters final, top 10
Sinner carried over his success from late 2020 into the start of the 2021 season. He won his second career ATP title at the Great Ocean Road Open, and notably defeated No. 20 Karen Khachanov in the semifinals after saving a match point. He became the youngest to win back-to-back ATP titles since Rafael Nadal in 2005. His ten-match winning streak came to an end in the first round of the 2021 Australian Open, where he lost a tight five-set match to world No. 12 Denis Shapovalov.
Sinner's next big result was at the Miami Open, where he reached his first ATP Masters 1000 final. During the tournament, he defeated Khachanov again and later world No. 12 Roberto Bautista Agut in the semifinal. He finished runner-up to Hubert Hurkacz.
Then at the French Open, his campaign was stopped short for the second year running by Rafael Nadal, who this time defeated Sinner in straight sets in the fourth round. In his main draw debut at Wimbledon, he lost in the first round to Márton Fucsovics.
Partnering Reilly Opelka he won his first doubles title at the 2021 Atlanta Open, defeating Steve Johnson and Jordan Thompson. At the same tournament in singles he fell in the second round to Christopher O'Connell.
At the 2021 Citi Open in Washington, D.C., Sinner went into the tournament as the fifth seed and made it to the finals and beat several young players along the way such as Emil Ruusuvuori, Sebastian Korda, and Jenson Brooksby. He beat Mackenzie McDonald in the final to win his third title and first ATP 500 title. Sinner was the first Italian finalist and champion in Washington's tournament history as well as the youngest ATP 500 and first teen champion since the category was created in 2009. As a result, he entered the top 15 in the ATP rankings on 9 August 2021.
At the US Open, he defeated Gaël Monfils in the third round to reach the second week of a Major for the second time in the season. Sinner's tournament ended when he lost to Alexander Zverev in the 4th round in straight sets.
Sinner successfully defended his title at the Sofia Open as the top seed, defeating again second seed Gaël Monfils in the final. Sinner made his sixth career final at the 2021 European Open without dropping a set en route. He defeated Lorenzo Musetti, Arthur Rinderknech and Lloyd Harris to reach the final. He bested Diego Schwartzman in the final to take his fifth career title. He became the youngest man to win five ATP titles since 19-year-old Novak Djokovic.
On 1 November, Sinner became the first male player born in the 2000s to break into the top-10 after a semifinal appearance at the Vienna Open. At the Paris Masters, Sinner received a bye in the first round but was defeated by Carlos Alcaraz. Because of this, Sinner was unable to directly qualify for the season-ending Nitto ATP Finals.