Thiago Agustín Tirante (born 10 April 2001) is an Argentine professional tennis player. He has a career-high ATP singles ranking of world No. 42 achieved on 24 August 2026 and a career-high doubles ranking of No. 225 achieved on 20 July 2026.
Contents
Junior career
In June 2019, Tirante won the boys' doubles title at the French Open with Brazilian Matheus Pucinelli de Almeida. Later that season, he earned the boys' singles trophy at the prestigious Orange Bowl.
Tirante had good results on the ITF Junior Circuit, maintaining a 130–57 singles win-loss record. He was named the 2019 world junior champion by the ITF and was the second Argentine to finish the season as world No. 1 in the junior rankings, after Axel Geller.
Professional career
2021: ATP debut and maiden ATP Challenger title
In March, he made his ATP Tour main draw debut at the 2021 Argentina Open. In September 2021, he won his maiden Challenger title at the 2021 Ambato La Gran Ciudad in Ecuador.
2023–2025: Major and Masters 1000 debuts, first top 10 win and top 100 debut
Tirante reached the final of the 2023 Mexico City Open, where he lost to German Dominik Koepfer. In May of that year, he entered the top 150 for the first time, following his second Challenger title at the 2023 Morelos Open, defeating Australian James Duckworth in the final.
Ranked No. 153, he made his slam main draw debut at the 2023 French Open, defeating Swiss Dominic Stricker in the last round of qualifying. Tirante recorded his first Grand Slam win over 25th seed Botic van de Zandschulp. He lost to Zhang Zhizhen in the second round.
In August he played at the 2023 Los Cabos Open, Mexico, and recorded first win at an ATP event over qualifier Gonzalo Lama. He won his third Challenger at the 2023 Open Bogotá over Gustavo Heide and reached a new career-high ranking of No. 111 on 2 October 2023. At the same tournament, he also won the doubles title with countryman Renzo Olivo.
At the 2024 Córdoba Open, Tirante reached the main draw as a lucky loser and recorded his third ATP win over an ATP debutant, wildcard Francisco Comesaña. He played the qualifying at the 2024 Rio Open, but lost to Italian Andrea Pellegrino. Despite the loss, he reached the top 100 on 26 February 2024.
Later that month, Tirante made an appearance at the 2024 Chile Open, where he defeated Brazilian prospect João Fonseca in straight sets. He lost to qualifier Corentin Moutet in the second round.
Tirante won his fourth Challenger at the 2024 Mexico City Open without dropping a set and reached a best singles ranking of world No. 91 on 8 April 2024.
In July, Tirante reached his first ATP Tour semifinal at the 2024 Swedish Open, after a run which included wins over top seed and defending champion, Andrey Rublev, his first top 10 win, and Roberto Carballés Baena in the quarterfinals, before losing to eventual champion Nuno Borges.
2026: Three top 10 wins, Masters 1000 quarterfinal, top 50
Tirante picked up his first Australian Open win. After reaching the quarterfinals in Manama, Tirante returned to the top 100.
Tirante reached his first ATP 500 quarterfinal at Rio, after 1st seed Francisco Cerúndolo retired in their second round match. He continued his clay-court success by reaching the semifinals at Houston, where he upset top seed and world no. 9 Ben Shelton for his second top 10 win. He continued his clay-court form by reaching the third round at Madrid and the fourth round at Rome, upsetting 18th seed Tommy Paul at Madrid, then 19th seed Cameron Norrie and eventual French Open finalist Flavio Cobolli at Rome. He also reached the third round at a Grand Slam for the first time at the French Open, where he upset Alejandro Davidovich Fokina in the second round. After recording his first ever grass-court win in Eastbourne and making his main-draw debut in Wimbledon, he reached his third quarterfinal of the year in Båstad, but had to withdraw from his match against Alejandro Tabilo.
In Montreal, Tirante reached the fourth round of a Masters 1000 event for the first time in his career, upsetting world no. 8 Taylor Fritz on the way there for his second top 10 win of the season and third top 10 win overall. He also upset former champion Alexei Popyrin, but eventually lost to 19th seed Learner Tien in the fourth round. As a result of this, he reached the world's top 50 for the first time. Tirante then continued his good form in Cincinnati, beating 3rd seed and world no. 5 Novak Djokovic in 3 sets for the biggest win of his career. He then beat Martín Landaluce and 14th seed Jakub Menšík to reach a Masters 1000 quarterfinal for the first time in his career. He lost to 21st seed Arthur Fils in the quarterfinals.
Coaching
Tirante hired Javier Nalbandian to be his coach in June 2022. Dante Gennaro replaced Nalbandian starting in September 2024 and during the 2025 United Cup, where Titante made his debut as the No. 2 Argentine singles player.
Performance timeline
Singles
Current through the 2026 Canadian Open.
ATP Challenger Tour finals
ITF Tour finals
Junior Grand Slam finals
Wins over top 10 players
Tirante's has a 4–1 (80.0%) record against players who were, at the time the match was played, ranked in the top 10.
*As of 15 August 2026
Awards
2019
ITF Junior World Champion