Tomáš Macháč

Macháč was born in Beroun, in the Czech region of Central Bohemia. He took up tennis after watching his older sister, Kateřina, compete in tournaments.

Macháč began training at TK Sparta Prague in Prague from the age of eight.

Macháč had mixed results on the ITF junior circuit, maintaining a 60-43 singles win-loss record. In 2017, he won the prestigious Orange Bowl in doubles, with compatriot Ondřej Štyler.

He reached an ITF junior combined ranking of No. 16 on 1 January 2018.

2021: First major win, Olympics debut

In March, Macháč won his second ATP Challenger singles title at the 2021 Nur-Sultan Challenger II.

In August, he reached his second Challenger final of 2021 at the Svijany Open where he lost to Alex Molčan in 58 minutes.

2022: Masters debut in Indian Wells & first win, top 100

Macháč made the final of the Traralgon Challenger and won, earning his first Challenger title on an outdoor hardcourt. As a result, he entered the top 130 on 10 January 2022. The following week he qualified for the 2022 Australian Open main draw, defeating Camilo Ugo Carabelli, Yuki Bhambri, and Jesper de Jong en route.

In March, he made his Masters 1000 debut as a qualifier at the Indian Wells Open and recorded his first win at this level defeating Alexei Popyrin. He lost to world No. 1, Daniil Medvedev.

In August, he won his fourth Challenger title at the 2022 Kozerki Open in Poland and moved 32 positions up to No. 126, on 22 August 2022. In the same month, he qualified for the US Open making his debut at this Grand Slam.

2023: Two ATP quarterfinals & Challenger titles, top 75

In February, Macháč qualified for the Dubai Championships but lost to world No. 1, Novak Djokovic in 3 sets.

At the U.S. Clay Court Championships, he reached his first ATP quarterfinal as a qualifier defeating Jack Sock and seventh seed Marcos Giron. He lost to Yannick Hanfmann.

Macháč won his fifth Challenger title at the 2023 Open d'Orléans in France and returned to the top 100 on 2 October 2023. The following week he won the Challenger 2023 Open de Vendée in Mouilleron-le-Captif, France and reached the top 85. At the Stockholm Open, he entered the main draw as a lucky loser replacing fourth seed Alejandro Davidovich Fokina directly into the second round. He defeated Stan Wawrinka to reach his second ATP quarterfinal. As a result, he reached the top 75 on 23 October 2023.

2024-2025: Olympics mixed gold, ATP title, Czech No. 1, top 20

In January, Macháč qualified for the 2024 Brisbane International and defeated seventh seed Tomás Martín Etcheverry for his first ATP win of the season. He also recorded wins at the 2024 Australian Open over lucky loser Shintaro Mochizuki and 17th seed Frances Tiafoe, for his first top-20 and biggest win of his career, to reach the third round of a Major for the first time. In doubles, on his debut, he reached the quarterfinals with Zhang Zhizhen, having never won a doubles Major match before, taking out the 2020 champions and third seeds Rajeev Ram and Joe Salisbury. Next he reached the semifinals defeating Ariel Behar and Adam Pavlásek.

For his first top 10 win at the 2024 Miami Open, Macháč reached the third round of a Masters 1000 for the first time, defeating ATP debutant local wildcard Darwin Blanch, and Andrey Rublev. Macháč defeated Andy Murray in a three and a half hours match to reach the fourth round of a Masters for the first time in his career. He went one step further to reach his first Masters 1000 quarterfinal having never been past the second round at this level, defeating Matteo Arnaldi, and reached the top 50 in the rankings on 1 April 2024 at world No. 43.

Macháč reached his first ATP semifinal at the 2024 Geneva Open with a win over Alex Michelsen. In the semifinals, Macháč defeated world No. 1 Novak Djokovic to reach his first ATP Tour-level singles final. Macháč lost to second seed and two-time Geneva champion Casper Ruud in straight sets. As a result, he reached the top 35 in the rankings on 27 May 2024.

At the 2024 Paris Olympics, Macháč won the gold medal in the mixed doubles with his doubles partner Kateřina Siniaková. At the same tournament, he also reached the bronze medal semifinals stage in Men's doubles with Adam Pavlásek but lost to Americans Taylor Fritz and Tommy Paul.

At the US Open, he reached the third round for the first time at this Grand Slam, and for the third time in a Major during the season, defeating Fabio Fognini and upsetting 16th seed Sebastian Korda both in straight sets. He defeated David Goffin to reach the fourth round for the first time in his career. At the 2024 Japan Open, he reached his second ATP semifinal in his career, defeating Alexei Popyrin, fifth seed Tommy Paul and Alex Michelsen. At the 2024 Shanghai Masters, he reached his first ATP Masters 1000 semifinal upsetting en route 11th seed Tommy Paul and World No. 2 Carlos Alcaraz, his second win over a Top 5 opponent (after Djokovic in Geneva SF). As a result, he reached the top 25 in the singles rankings and became the Czech No. 1 player.

Macháč reached the top 20 in the singles rankings on 3 March 2025 following winning his first ATP title and first at the 500-level at the Mexican Open defeating Alejandro Davidovich Fokina in the final.

Macháč dated fellow Czech tennis player Kateřina Siniaková. In July 2024, Siniaková confirmed they broke up.

Singles

Current through the 2026 US Open.

Doubles

Current through the 2026 US Open.

Summer Olympics

Doubles: 1 (4th place)

Mixed doubles: 1 (gold medal)

Singles: 3 (2 titles, 1 runner-up)

Doubles: 1 (title)

Singles: 11 (6 titles, 5 runner-ups)

Doubles: 2 (2 runner-ups)

Singles: 4 (4 titles)

Doubles: 4 (4 runner-ups)

• Macháč has a 4-17 (19.05%) record against players who were, at the time the match was played, ranked in the top 10.

• Key: (Rk) first use, opponent rank; (Rd) round; (Rk) 2nd use, player rank; (Ref) reference; (F) final; (SF) semifinal; (QF) quarterfinal; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualifying rounds or stages (3), 2, 1.

*As of 29 December 2025