Alex Molčan (born 1 December 1997) is a Slovak professional tennis player. Molčan has a career-high ATP singles ranking of World No. 87 achieved on 22 November 2021. He also has a career high ATP doubles ranking of No. 268 achieved on 14 June 2021. He is currently the No. 1 Slovak tennis player in singles.[1]
Molčan has reached one ATP final at the 2021 Belgrade Open and eleven singles ITF finals, with a record of 6 wins and 5 losses which includes a 2–2 result in ATP Challenger finals. Additionally, he has reached five career doubles ITF finals, with a record of 2 wins and 3 losses, including a 1–3 result in ATP Challenger finals.
2021: First ATP final and top 200 debut, Grand Slam debut and third round, Slovak No. 1 player, top 100 debut[]
Molčan made his ATP debut in January 2021 at the 2021 Antalya Open in Turkey, where he defeated Andrey Golubev and Blaž Kavčič to qualify for the main draw. Molčan then lost in the first round to France's Hugo Grenier in straight sets 5–7, 4–6.[2]
In May, at the 2021 Belgrade Open, after qualifying yet again, Molčan reached the final of an ATP tournament for the first time in his career by defeating two Serbian wildcard players Hamad Međedović and Peđa Krstin, Spaniard Fernando Verdasco and clay specialist Argentinian Federico Delbonis which propelled him 74 spots up into the top 200 at World No. 181 in the rankings on 31 May 2021. In the final, he lost in straight sets to the top seed and World No. 1 Novak Djokovic.[3]
He entered the top 150 on 19 July 2021 after reaching the final of the 2021 Moneta Czech Open Challenger in Prostějov, and the round of 16 at the 2021 Hamburg European Open defeating Gianluca Mager. In August, he won his first Challenger title at the 2021 Svijany Open in Liberec defeating Tomáš Macháč in 58 minutes where he lost just 18 games to win the title. [4][5] As a result he hit a new career-high of No. 136 on 9 August 2021.
He made his Grand Slam debut the 2021 US Open after qualifying to the main draw.[6] He overcame fellow qualifier and also making his debut Cem İlkel and Brandon Nakashima in five sets to reach the second and third round respectively for the first time in his career.[7][8] In the third round, he was defeated by the eleventh seed Diego Schwartzman in straight sets.[9] As a result he hit a new career-high of No. 117 on 13 September 2021. He became the No. 1 Slovak player on 8 November 2021 when he reached a career-high of No. 106 in the singles rankings following a semifinal at the Challenger in Bergamo. In November, he won the title at the 2021 Tali Open Challenger in Helsinki thus breaking into the top 100 at World No. 87 in the ATP year-end rankings on 22 November 2021.[10][11]
Molcan's record against players who have been ranked in the top 10, with those who are active in boldface. Only ATP Tour main draw matches are considered:
Slovakia
Novak Djokovic
Kirill Dmitriev
Karim-Mohamed Maamoun
Dennis Novak
Tomáš Jiroušek
Ewan Moore
Kimmer Coppejans
Federico Coria
João Sousa
Vadim Alekseenko 
Harri Heliovaara 
Albano Olivetti 
Blaž Kavčič 
Hubert Hurkacz
Jake Delaney
Fernando Verdasco
16)
7)