Jan Zieliński (Polish: [ˈjan ʑɛˈliɲskʲi]; born 16 November 1996) is a Polish professional tennis player who specializes in doubles. He has an ATP career-high doubles ranking of world No. 7, which he attained on 19 June 2023. His highest ranking in singles has been No. 769, achieved on 20 September 2021. His best results at Grand Slam events have been reaching the final of the 2023 Australian Open doubles with Hugo Nys and winning the 2024 Australian Open mixed doubles alongside partner Hsieh Su-wei.
2021: First ATP doubles title and top 100 debut[edit]
Jan Zieliński at the 2021 Internationaux de Tennis de Vendée
Zieliński made his top 100 doubles debut at No. 99 on 1 November 2021 after winning his first ATP Tour doubles title at the 2021 Moselle Open with his compatriot Hubert Hurkacz.[1]
2022: First Major quarterfinal, second ATP title and top 35 debut[edit]
In January 2022, he made his debut participating as part of the Polish team at the 2022 ATP Cup, where he played doubles with Szymon Walków and won against Georgia and Argentina. After Hurkacz's win over Diego Schwartzman sealed the victory for Poland over Argentina, the Polish team advanced to the semifinals.[2] The pair won again against Spain in doubles, but the team did not advance to the finals.
He reached the top 50 in doubles at world No. 49 on 18 July 2022. In August, at his debut at a Masters 1000 level, he reached his first semifinal at the 2022 National Bank Open also with Hurkacz, defeating sixth seeds Puetz/Venus in the first round,[3] Bopanna/Middelkoop in the second and fourth seeds, and French Open champions Arévalo/Rogers in the quarterfinals.[4][5]
Following their first Masters 1000 title in Rome, Zielinski reached a career high ranking of No. 12 on 22 May 2023.[8] Following the 2023 French Open, he made his debut in the top 10 in the rankings at world No. 9 on 12 June 2023.
At the 2023 Moselle Open in Metz the Monegasque/Polish pair defended their crown but came short of qualifying for the year-end 2023 ATP Finals, finishing ninth in the ATP race.[9]
At the 2024 Australian Open he reached the quarterfinals with Nys but lost to unseeded pair Dominik Koepfer and Yannick Hanfmann and could not defend their previous year runner-up points. Despite the loss in the doubles event, seeded third, he reached the final in the mixed doubles partnering Hsieh Su-wei, and they won their first Major mixed doubles title, defeating second seeds Desirae Krawczyk and Neal Skupski.[10] They saved a championship point en route to Zieliński's first Grand Slam title and Hsieh's seventh, and first on hardcourts. Zieliński became the first Polish finalist and champion at a mixed doubles event.[11][12]
(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (P#) preliminary round; (DNQ) did not qualify; (A) absent; (Z#) Davis/Fed Cup Zonal Group (with number indication) or (PO) play-off; (G) gold, (S) silver or (B) bronze Olympic/Paralympic medal; (NMS) not a Masters tournament; (NTI) not a Tier I tournament; (P) postponed; (NH) not held; (SR) strike rate (events won / competed); (W–L) win–loss record.
To avoid confusion and double counting, these charts are updated at the conclusion of a tournament or when the player's participation has ended.
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Hugo Nys
Rinky Hijikata
Hsieh Su-wei
Desirae Krawczyk
Neal Skupski
Marc-Andrea Hüsler 
Arthur Rinderknech
Andrea Vavassori
Rafael Matos
David Vega Hernández
Harri Heliövaara
Robin Haase 
Santiago González
Constantin Frantzen
Máximo González
Alexander Erler
Libor Salaba
Mohamed Safwat
Markus Eriksson 
Laurynas Grigelis 
Vladimir Polyakov 
Adil Kalyanpur 
Kelsey Stevenson
Janis Podzus 
Luis David Martínez 
Andrey Golubev 
Ivan Sabanov 
