Sebastian Ofner (born 12 May 1996) is an Austrian tennis player.
Ofner has a career high ATP singles ranking of 129 achieved on 7 August 2017. He was a semifinalist at the 2017 Generali Open Kitzbühel in his home country.
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 wild card in the second round. He then won over Renzo Olivo to reach the semifinals where he fell to João Sousa.
ATP Challenger Tour finals
Singles: 1 (1 runner-up)
|Runner-up||28 May 2017||Mestre, Italy||Clay||João Domingues||6–7(4–7), 4–6|
Singles performance timeline
Current through the 2017 US Open Qualifying.
|Grand Slam tournaments|