Kilian Feldbausch (born 7 September 2005) is a Swiss tennis player. He has a career-high ATP singles rankings of world No. 230 achieved on 3 August 2026 and a career-high doubles ranking of No. 458 achieved on 10 November 2025. He is currently the No. 5 Swiss singles player.
Personal life He is the son of former tennis player Cathy Caverzasio.
Career 2021–2022: Juniors and Pro beginnings He featured in a professional tennis tournament in Biel/Bienne, Switzerland in March 2021, at age 15.
Feldbausch became the first Swiss player since Roger Federer in 1998 to reach the semifinals of the junior Australian Open. He also reached the semifinals of the doubles, partnering Gabriel Debru.
Kilian Feldbausch won his first 3 ATP points after reaching the semifinals of the M25 Futures in Trimbach, Switzerland.
He further reached the round of 16 at the Challenger Biel/Bienne, after beating the 7th seed Marc-Andrea Hüsler in the first round in straight sets. He then lost in straight sets with two tiebreaks, in the second round, to Filip Horanský.
2025–2026: First Challenger title, top 300 At the 2025 Città di Biella he reached his second Challenger final but lost to Stefano Napolitano. As a result he reached a new career-high in the top 350 at world No. 334 on 15 September 2025.
Feldbausch won his maiden Challenger title at the 2026 Košice Open, defeating Martin Krumich in the final. As a result he reached the top 300 on 8 June 2026.
ATP Challenger Tour finals
Singles: 4 (1 title, 3 runner-ups) LegendATP Challenger Tour (1–3)
ResultW–LDateTournamentTierSurfaceOpponentScoreLoss0–1Maspalomas, SpainChallengerClay Pedro Martínez4–6, 6–4, 3–6Loss0–2Biella, ItalyChallengerClay Stefano Napolitano5–7, 4–6Win1–2Košice, SlovakiaChallengerClay Martin Krumich6–0, 4–6, 6–4Loss1–3Troyes, FranceChallengerClay Marvin Möller6–7(5–7), 4–6
Doubles: 1 (1 title) LegendATP Challenger Tour (1–0)
ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreWin1–0Mar 2025Mérida, MexicoChallengerClay Rodrigo Pacheco Méndez Trey Hilderbrand George Goldhoff6-4, 6-2
ITF World Tennis Tour finals
Singles: 2 (2 titles) LegendITF WTT (2–0)
ResultW–LDateTournamentTierSurfaceOpponentScoreWin1–0M15 Boca Raton, United StatesWTTClay Garrett Johns6–4, 7–5Win2–0M15 Antalya, TurkeyWTTClay Evgenii Tiurnev6–3, 6–4 Doubles: 1 (1 title) LegendITF WTT (1–0)
ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreWin1–0Jan 2025M15 Antalya, TurkeyWTTClay Rodrigo Pacheco Méndez Vit Kalina Nikita Mashtakov3-6, 6-2, 10-5
References
External links
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