Kamil Adrian Majchrzak[a] (born 13 January 1996[3]) is a Polish professional tennis player. He has a career-high ATP singles ranking of world No. 59 achieved on 5 January 2026 and a doubles ranking of No. 241 achieved on 8 August 2016.[4] He is currently the No. 1 singles player from Poland.[5]
During the 2019 Australian Open, Majchrzak advanced through the qualifying to reach the 1st round. He won the first two sets against top-10 player Kei Nishikori, but then was forced to retire due to an injury.[6]
Majchrzak made the semifinals of the 2019 Ilkley Trophy Challenger and then qualified for Wimbledon without dropping a set. In the first round at Wimbledon he lost to Fernando Verdasco. At the 2019 Hall of Fame Open in Rhode Island he defeated Alastair Gray before losing a three set match to No. 1 seed John Isner in the second round.[8] As a result, he reached the top 100 on 29 July 2019.[4]
At the 2019 US Open, Majchrzak lost in the final round of qualifying. With the sudden withdrawal of Milos Raonic, he came in as a lucky loser, and defeated Nicolás Jarry and Pablo Cuevas – both in five-set thrillers to reach the third round at a Grand Slam for the first time in his career. He fell to Grigor Dimitrov in straight sets in the third round. He reached a new career-high of No. 83 on 23 September 19.[4]
2020: Inaugural ATP Cup, Injury and return
At the start of the year, Majchrzak participated in the inaugural 2020 ATP Cup before suffering from a broken pelvic bone.[9] Subsequently, Majchrzak had to withdraw from the 2020 Australian Open and Maharashtra Open due to a groin injury.[10] He would not compete again for more than seven months. In August he returned to tennis and participated at the US Open where he lost to Ernesto Escobedo in the first round.
In September, he transitioned to clay courts and won his third Challenger title at the Czech Open. In the final, he defeated top seed and defending champion Pablo Andújar.[11] Majchrzak entered at the 2020 French Open with a protected ranking making his debut at this major. In the first round he lost to 15th seeded Karen Khachanov.[12]
2021: Masters & Olympics debut, First ATP quarterfinal
The first five months of the year proved unsuccessful for Majchrzak, winning just three of his first ten matches across the ATP Tour and ATP Challenger Tour. He began to turn it around at the 2021 Italian Open where he qualified by defeating two top 100 players in Alexei Popyrin and Yoshihito Nishioka. He lost to Denis Shapovalov in the first round of the main draw. The following week he qualified at the 2021 ATP Lyon Open and won his first round match. He used his protected ranking as well to enter the main draw of the 2021 French Open and also reached the second round with a win over Arthur Cazaux. He had a successful grass court swing, reaching a semifinal and a final at back-to-back challengers in Nottingham, United Kingdom. However, he lost in qualifying at Wimbledon.
Majchrzak qualified at the 2021 Sofia Open as a lucky loser after the withdrawal of fourth seed Alexander Bublik. He reached the quarterfinals of an ATP tournament for the first time in his career by defeating wildcard Dimitar Kuzmanov.[16]
2022–2023: ATP Cup semifinalist, top 75, doping suspension
At the 2022 ATP Cup, Majchrzak won all his three matches and helped Poland reach the semifinals for the first time,[9] before testing positive for COVID-19 and having to withdraw late from the tournament. As a result, he was unable to participate at the 2022 Australian Open qualifications where he was seeded fourth and thus possibly missing the first Grand Slam of the year.[17] He nevertheless entered the main draw after replacing Jenson Brooksby who withdrew due to COVID-19. He reached the second round for the first time at this major with a win over Andreas Seppi. Majchrzak lost to Alex de Minaur in the second round.[18]
At the 2022 Tata Open Maharashtra he reached the semifinals of an ATP tournament for the first time in his career defeating second seed Lorenzo Musetti.[19] As a result, he reached the top 75 in the rankings on 28 February 2022.[4][13]
In May at the 2022 Geneva Open he clinched the biggest win of his career defeating 8th seed and World No. 41 Alexander Bublik in the first round in straight sets.[20][21] He reached the quarterfinals only for the third time in his career defeating qualifier Marco Cecchinato.[22] Majchrzak competed for Poland in their Davis Cup tie against Indonesia. He won two rubbers, losing just one game between them, to help Poland claim victory, 5-0.[citation needed]
In September at the 2022 Sofia Open he reached his third tour-level quarterfinal of the season, for a second year in a row, defeating Ričardas Berankis and eight seed Oscar Otte.[23] He lost to eventual champion Marc-Andrea Huesler.[24] At the 2022 Busan Open in South Korea, he won his fourth Challenger title defeating Radu Albot and as a result he moved 20 positions up back into the top 100 at No. 82 on 24 October 2022.[4] On 9 December 2022, the International Tennis Integrity Agency announced that Majchrzak had been provisionally suspended after testing positive for banned substances at the Sofia Open, the Japan Open and the Seoul Challenger.[25][26][27][28] In June 2023, the agency suspended Majchrzak for 13 months, while acknowledging that Majchrzak had not "knowingly or intentionally" committed an offense.[29] Majchrzak's suspension ended on 29 December 2023.
2024: Comeback, first Challenger titles since 2022, top 120
Majchrzak returned to professional tennis on 31 December 2023. In his first tournament since 2022, he progressed through qualifying and won eight consecutive matches to capture the title in Monastir, Tunisia. He did not lose a set and won eight 6-0 sets throughout the tournament.[30] He competed in another ITF event in Monastir the following week, winning two more matches to reach the quarterfinals before losing to Nicola Kuhn, ending the longest winning streak of his career.[citation needed] Following these results, he returned to the ATP rankings at world No. 944 on 15 January 2024.[4]
At the end of January, Majchrzak received a wildcard to compete at the 2024 BW Open, marking his return to the ATP Challenger Tour. He defeated countryman Maks Kaśnikowski in three sets before losing to former world No. 12 and the eventual finalist, Borna Ćorić.[31] In February, he was nominated for the Polish Davis Cup team, winning a dead rubber against Maxim Shin of Uzbekistan.[32]
Ranked No. 652,[33] Majchrzak received a wildcard to compete at the Rwanda Challenger. He defeated Bogdan Bobrov, Juan Pablo Paz, Calvin Hemery and Max Houkes en route to his first Challenger final since 2022. Majchrzak defeated Marco Trungelliti in the final to win his fifth Challenger title and first since his return from the suspension.[34][35] He competed again in the second Rwanda Challenger where he came through qualifying to extend his winning streak at the tournament to 10 matches, defeating Ivan Gakhov, David Pichler and Stefan Kozlov to reach his second consecutive semifinal. He lost to Marco Trungelliti in a rematch of the previous week's final.[36] Following this he won another ITF-level title at Sharm-el-Sheikh without dropping a set.[37]
In May, he returned to form following some injury problems in April. He reached the final the Macedonia Open but lost to teenager Joel Schwärzler in the final.[38] A few weeks later, won the Bratislava Open. He advanced through the qualifying draw and defeated top four players ranked inside the top 300 to win the biggest title of his comeback so far. He defeated the likes of Ergi Kırkın, Dmitry Popko, Jérôme Kym and Henrique Rocha en route.[39] The following week, he played his first tournament in Poland since 2022 at the Poznan Open. During this tournament, he defeated former top 10 player Pablo Carreño Busta en route to the semifinals where he lost to compatriot Maks Kaśnikowski after suffering from a mid-match wrist injury.[40] Despite the loss, he returned to the top 200 in the ATP rankings and guaranteed his place at US Open qualifying.[4] In July, he reached another Challenger-level semifinal at the 2024 Platzmann Open.[41][40]
He competed in qualifying at the 2024 US Open, marking his first appearance at a grand slam tournament since 2022. He defeated American wildcard Michael Zheng[42] and Daniel Elahi Galán to reach the final round of qualifying where he ultimately then lost to the in-form Mattia Belucci.[43] His win over world No. 129 Galán marked his best win by ranking since his comeback.[44]
In October, Majchrzak won his third title of the year at the 2024 JC Ferrero Challenger Open in Villena, Alicante Province, Spain. He defeated Nicolas Moreno de Alboran in straight sets in the final.[47] He then competed at his second ATP Tour-level tournament at the 2024 Stockholm Open where he defeated Swedish wildcard Rafael Ymer in the first round of qualifying. As a result he returned to the top 115 in the ATP singles rankings on 21 October 2024.[40][4]
2025: Wimbledon fourth round, top 65, Polish No. 1
Majchrzak began the year as a member of the Polish Team at the 2025 United Cup as the reserve singles player.[48] Poland reached the final. He then competed in qualifying event at the 2025 Australian Open. He saved a match point to defeat Marco Trungelliti in the opening round, before winning against Zachary Svajda, and Billy Harris[49] to qualify for his first major since 2022. He lost in the opening round to Pablo Carreño Busta.[50]
At the 2025 Wimbledon Championships, he entered the main draw for the first time since 2022. It was the second time in his career that he made it to the third round of a Grand Slam event, with wins over former finalist and 32nd seed Matteo Berrettini in five sets,[61][62] and Ethan Quinn.[63][64] He defeated Arthur Rinderknech in straight sets to reach the fourth round at a Grand Slam for the first time[13][65][66][67] and returned to the top 85 in the singles rankings on 14 July 2025.[68] He ultimately lost to Karen Khachanov in the fourth round.[69]
At the US Open, he reached the third round for the second time at the tournament, with an upset over 9th seed Karen Khachanov, and achieved a career-high ranking in the top 65 on 8 September 2025, thus becoming the No. 1 ranked player from Poland.[73][4] An incident occurred after the match where Majchrzak signed a cap for a boy when the cap was grabbed by a millionaire CEO of a paving company. The video went viral with the CEO, Piotr Szczerek, being forced to apologize. After a public search for the boy, Majchrzak personally gave him a new signed cap.[74][75][76][77] In the following round he retired against Leandro Riedi in the first set.[78] This injury also prompted him to withdraw from Poland'sDavis Cup tie against Great Britain.[79]
Performance timeline
Key
W
F
SF
QF
#R
RR
Q#
DNQ
A
NH
(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (DNQ) did not qualify; (A) absent; (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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Poland
