Jan Kumstát
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Jan Kumstát (born 2 January 2007) is a Czech tennis player. He won the boys' doubles event at the 2025 Australian Open.


Career

In the summer of 2022 he won gold in the singles at the European Youth Olympic Festival in
Banská Bystrica Banská Bystrica (, also known by other #Etymology, alternative names) is a city in central Slovakia, located on the Hron River in a long and wide valley encircled by the mountain chains of the Low Tatras, the Greater Fatra, Veľká Fatra, and t ...
. He was part of the Czech team that won the 2023 Junior Davis Cup. Competing in the junior events at the 2024 Australian Open he made his debut at a junior grand slam tournament. He defeated home favourite Hayden Jones on his way to reaching the final. In the final he lost to Rei Sakamoto of Japan. He also reached the quarter-finals in the boys' doubles with Norwegian partner Nicolai Budkov Kjaer. Playing alongside compatriot Jan Klimas he reached the final of the boys' doubles at the 2024 Wimbledon Championships where they were defeated by Alexander Razeghi and Max Schönhaus. He went into the 2025 Australian Open as the highest-ranked junior in the tournament. He reached quarter-final of the boys' singles at the Australian Open in
2025 So far, the year has seen the continuation of major armed conflicts, including the Russian invasion of Ukraine, the Sudanese civil war (2023–present), Sudanese civil war, and the Gaza war. Internal crises in Bangladesh post-resignation v ...
where he lost to Henry Bernet. He also reached the final of the boys' doubles alongside
Maxwell Exsted Maxwell Exsted (born March 12, 2007) is an American tennis player. He won the List of Australian Open champions#Junior, boys' doubles champions at the 2024 Australian Open – Boys' doubles, 2024 and 2025 Australian Open – Boys' doubles, 2025 A ...
, where they defeated Ognjen Milic and Egor Pleshivtsev for the title.


Personal life

He is from
Prostějov Prostějov (; ) is a city in the Olomouc Region of the Czech Republic. It has about 43,000 inhabitants. The city is historically known for its fashion industry. The historic city centre is well preserved and is protected as an urban monument zo ...
, he is the son of
ice hockey Ice hockey (or simply hockey in North America) is a team sport played on ice skates, usually on an Ice rink, ice skating rink with Ice hockey rink, lines and markings specific to the sport. It belongs to a family of sports called hockey. Tw ...
player Pavel Kumstát and nephew of Petr Kumstát. His mother Kateřina was a
volleyball Volleyball is a team sport in which two teams of six players are separated by a net. Each team tries to score points by grounding a ball on the other team's court under organized rules. It has been a part of the official program of the Summ ...
player.


Junior Grand Slam finals


Singles: 1 (1 runner-up)


Doubles: 2 (1 title, 1 runner-up)


References

{{DEFAULTSORT:Kumstát, Jan 2007 births Living people Czech male tennis players Sportspeople from Prostějov Tennis players from the Olomouc Region