2022: First Challenger title and top 200 He won his first Challenger title in August 2022 in
Banja Luka and reached the top 200 at world No. 185 on 29 August 2022.
2023: ATP, Major, Masters debut & win over world No. 2 & quarterfinal, top 65 He won his second Challenger in March 2023 in
Antalya and moved to a new career high of No. 128 on 20 March 2023. Ranked No. 135, Marozsán made his ATP and Masters 1000 debut at the
2023 Italian Open after qualifying into the main draw. He won his first Masters level match, defeating
Corentin Moutet. In his second round match, he defeated 32nd seed
Jiří Lehečka in a third set tiebreaker. He then upset world No. 2
Carlos Alcaraz in straight sets for the biggest win of his career and first top-5 and top-10 win, to reach the fourth round. As a result, he moved 20 positions up to world No. 115 on 22 May 2023. He lost to
Borna Ćorić in three sets. He reached the top 100 on 19 June 2023, after winning the
Perugia Challenger title, defeating top seed
Pedro Cachin in the semifinals and wildcard Edoardo Lavagno in the final without dropping a set en route. He made his debut at the
2023 Wimbledon Championships as a lucky loser after the late withdrawal of
Nick Kyrgios. In his second Grand Slam main draw appearance, he reached the second round of the
2023 US Open. In his first round match, he defeated
Richard Gasquet in a five sets match where he was originally leading by two sets and a break. At the
2023 Rolex Shanghai Masters he reached again the fourth round at the Masters level in the season and only twice in his career, defeating
Arthur Rinderknech, 11th seed
Alex de Minaur and
Dušan Lajović for his fourth, fifth and sixth wins at a Masters 1000 level all in straight sets. He became the first Hungarian to reach a quarterfinal at the Masters 1000 level since the series began in 1990 with a top-10 win over
Casper Ruud. He reached another quarterfinal at the
2023 Sofia Open defeating
Roberto Bautista Agut coming back from a break down in the third set and converting his fourth match point, before losing to
Jan-Lennard Struff.
2024: Major third round, second Masters quarterfinal, top 40 At the
2024 Australian Open he reached the third round with wins over
Marin Čilić and 22nd seed
Francisco Cerundolo. At the
2024 BNP Paribas Open he reached the fourth round of a Masters for the third time in his career defeating lucky loser
Jurij Rodionov, 24th seed
Nicolás Jarry and qualifier
Thiago Seyboth Wild. At the
2024 Miami Open he reached again the fourth round of a Masters, this time defeating
Aleksandar Kovacevic, upsetting sixth seed
Holger Rune, for his third top-10 win, dropping only two games en route in less than one hour, and
Alexei Popyrin also in straight sets. He defeated another Australian and top 10 player
Alex de Minaur to reach his second Masters quarterfinal. As a result he reached the top 40 in the rankings.
2025: First ATP semifinal At the
2025 Australian Open Marozsan reached again the third round defeating 17th seed
Frances Tiafoe, in his second fifth setter at the tournament. At the ATP 500
2025 BMW Open in Munich, he reached his first ever ATP and also 500-level semifinal defeating
Justin Engel,
Ugo Humbert,
Zizou Bergs before losing to eventual champion
Alexander Zverev.
2026: Second semifinal & consecutive Major third round Marozsan reached his second ATP semifinal at the
2026 ASB Classic defeating defending champion
Gael Monfils, second seed
Casper Ruud and qualifier
Eliot Spizzirri. He reached the third round of the Australian Open for a third time in consecutive seasons, defeating
Kamil Majchrzak. ==Performance timeline==