Harold Mayot (born 4 February 2002) is a French professional tennis player.[2] He has a career high ATP singles ranking of world No. 103 achieved on 14 October 2024. He also has a career high ATP doubles ranking of world No. 255 achieved on 16 September 2024.[3]
As a junior, Mayot reached his highest ranking of number 1 in the world in the combined singles and doubles ITF junior ranking system, which he reached on 3 February 2020 and sustained to end the year as the number one male juniors player in the world.[4] This was highlighted by a winning the championship at the 2020 Australian Open where he defeated compatriot Arthur Cazaux in straight sets 6–4, 6–1.[5]
Mayot made his ATP main draw debut at the 2020 Open 13 simultaneously in both single and doubles when he was granted a wildcard entry into both draws partnering compatriot Arthur Cazaux. They were defeated in the first round by Nicolas Mahut and Vasek Pospisil in straight sets. In singles, he was also defeated in the first round by veteran compatriot Gilles Simon in straight sets.
Pairing with Cazaux again, they were given a wildcard entry into the main doubles draw of the 2020 French Open but would again be defeated in the first round by Łukasz Kubot and Marcelo Melo in straight sets. At the same tournament Mayot received also a wildcard into the singles main draw, and was defeated by Alejandro Davidovich Fokina.
Mayot received a wildcard for the qualifying competition at the 2022 Australian Open.
In July, Mayot reached his first ATP Challenger Tour final as a qualifier at the 2022 Tampere Open in Finland, losing against Zsombor Piros. As a result, he reached a new career-high singles ranking of No. 304 and also a doubles ranking of No. 450 on 25 July 2022. He reached the top 250 at world No. 248 on 19 September 2022.
2023: Top 200 & Wimbledon debuts, first Major win and ATP quarterfinal
Following a semifinal showing at the 2023 Open Aix Provence as a lucky loser where he beat three top 100 players then lost to fifth seed Andy Murray,[6] he reached the top 200 in the rankings on 8 May 2023.
In June, Mayot won his first doubles match at the 2023 French Open partnering with Jonathan Eysseric, having failed to qualify in the singles. In July, Mayot made his Wimbledon debut as a qualifier, only his second career Major singles appearance.,[7] where he recorded his first singles Grand Slam win by beating fellow countryman Benjamin Bonzi in the first round.[8] He later made his debut at the US Open qualifying, where he lost in the first round.
In November, ranked No. 176, Mayot qualified at his home tournament in Metz, France. He reached the main draw as a qualifier where he defeated Yosuke Watanuki in the first round[9] and Grégoire Barrère in the second to reach his first quarterfinal on the ATP Tour.[10] He lost to fourth seed Ugo Humbert in the quarterfinals.[11][12]
Following the 2024 Australian Open where he made it to the third round of qualifying for the first time at this Major, he reached the top 150 at No. 144 on 29 January 2024. At the 2024 Open Sud de France, he reached the quarterfinals defeating two compatriots Lucas Pouille and Benoît Paire.
In April, as the top seed Mayot reached the final of the Challenger tournament in Barletta, Italy, defeating Jacopo Berrettini before losing to second seed Damir Džumhur in the final. As a result, he reached the top 120 in the rankings on 8 April 2024.[14]
In June, Mayot reached his first Challenger final on grass in Ilkley, losing to fourth seed David Goffin in the final.[15] In September, he reached his fifth Challenger final in Orléans, losing to Jacob Fearnley in the final.[16]
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France
Zsombor Piros
Hamad Medjedovic
Damir Džumhur
David Goffin
Jacob Fearnley
Luke Saville
Elmar Ejupovic
Chung Yun-seong
David Pichler 
Alessandro Bega