2017: ATP and Grand Slam debut at Wimbledon & third round Ofner made his ATP main draw debut at the
2017 Wimbledon Championships after going through qualifying, defeating
Kimmer Coppejans,
Miljan Zekić and
Jay Clarke. In the first round, he beat
Thomaz Bellucci in straight sets. In the next round, he upset world No. 18
Jack Sock in a five-setter. In August, Ofner caused another surprise in front of his home crowd at the
2017 Generali Open Kitzbühel by defeating first seed
Pablo Cuevas as a wildcard in the second round. He then won over
Renzo Olivo to reach the semifinals where he fell to
João Sousa.
2018–2022: Maiden Challenger title, French Open debut Ofner won his maiden
ATP Challenger title at the
2018 President's Cup in Astana. At the
2022 French Open he qualified to make his Grand Slam main draw debut at this Major. He lost to World No. 3
Alexander Zverev in the first round.
2023: Major fourth round, Austrian No. 1, top 50, Masters debut and first win In the first three months of the season Ofner reached three Challenger Tour finals in
Tenerife, and in
Zadar. He qualified for his first ATP tournament for the season in
Estoril where he lost in the first round to
Dominic Thiem. Ranked No. 118, he qualified for the main draw of the
2023 French Open for a second consecutive year and defeated
Maxime Cressy for his first win at this Major. Next he defeated 24th seed
Sebastian Korda to reach the third round for a second time at a Major. He went one step further and defeated
Fabio Fognini to reach the fourth round of a Major for the first time in his career. He lost to
Stefanos Tsitsipas in straight sets. As a result he made his top 100 debut at world No. 81 and became the Austrian No. 1 player on 12 June 2023. He further reached the top 70 following a Challenger final showing at the
2023 Ilkley Trophy where he lost to
Jason Kubler. As a result of his run he received a wildcard for the
2023 Wimbledon Championships, where he had made the third round previously in 2017. He reached a new career-high ranking of No. 52 on 24 July 2023. He also made the second round at the last Major, the
US Open. At the
2023 Astana Open, he reached the semifinals defeating third seed
Alexander Bublik and this time compatriot Dominic Thiem. As a result he moved into the top 50 in the rankings on 2 October 2023. He lost to sixth seed and eventual champion
Adrian Mannarino. Ofner made his Masters debut at the
2023 Rolex Shanghai Masters where he reached the second round for his first win over
Juan Pablo Varillas. He received a wildcard for the
2023 Erste Bank Open. He finished the year ranked No. 43 in the world.
2024-2025: Top 40, Australian, Olympics debuts, ATP final Ofner reached the semifinals in
Hong Kong defeating
Mackenzie McDonald, fifth seed
Jan-Lennard Struff and
Roberto Bautista Agut. He lost to
Emil Ruusuvuori in three sets. As a result, he reached the top 40 on 8 January 2024. He made his debut at the
2024 Australian Open where he lost to
Thanasi Kokkinakis in a tight five setter with a fifth set tiebreak. He reached his maiden final at the
2024 Mallorca Championships, which he lost to
Alejandro Tabilo. == Performance timeline ==