Leonie Küng
Leonie Küng is a Swiss tennis player. Küng has a career-high WTA singles ranking of No. 156, achieved on 17 February 2020. She also has a career-high WTA doubles ranking of No. 331, achieved on 19 August 2019. As a qualifier, Küng reached the singles final of the Junior Wimbledon Championships in 2018..
Küng has won 5 singles and 2 doubles titles on the ITF tour. She won her first $15,000 events in singles and doubles at the age of 17 in November 2017 in Oslo. Küng is the reigning Swiss National Singles Champion and also won the Swiss National Doubles title partnering Ylena In-Albon..
Küng made her WTA Tour main-draw debut at the 2017 Ladies Open Biel Bienne in the doubles draw partnering Ylena In-Albon.. Küng reached her maiden WTA Tour singles final at the 2020 Thailand Open by defeating three top-100 players en-route to the final.
WTA career finals
Singles: 1 (1 runner-up)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Loss | 0–1 | Feb 2020 | Hua Hin Championships, Thailand | International | Hard |  Magda Linette | 3–6, 2–6 |
ITF Circuit finals
Singles: 8 (5 titles, 3 runner-ups)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Loss | 0–1 | Oct 2016 | ITF Telde, Spain | 10,000 | Clay |  Giulia Gatto-Monticone | 6–2, 1–6, 3–6 |
| Win | 1–1 | Nov 2017 | ITF Oslo, Norway | 15,000 | Hard |  Simona Waltert | 6–4, 6–4 |
| Win | 2–1 | Jan 2018 | ITF Fort-de-France, Martinique | 15,000 | Hard |  Emily Appleton | 6–4, 2–6, 6–4 |
| Loss | 2–2 | Jan 2018 | ITF Petit-Bourg, Guadeloupe | 15,000 | Hard |  Irina Ramialison | 3–6, 5–7 |
| Win | 3–2 | Dec 2018 | ITF Monastir, Tunisia | 15,000 | Hard |  Chiara Scholl | 6–2, 6–1 |
| Win | 4–2 | Dec 2018 | ITF Monastir, Tunisia | 15,000 | Hard |  Bojana Marinković | 6–2, 6–4 |
| Loss | 4–3 | Aug 2019 | ITF Las Palmas, Spain | 25,000+H | Clay |  Mayar Sherif | 1–6, 0–6 |
| Win | 5–3 | Dec 2019 | ITF Antalya, Turkey | 15,000 | Hard |  Georgia Crăciun | 6–2, 6–4 |
Doubles: 5 (2 titles, 3 runner-ups)
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Loss | 0–1 | Sep 2016 | ITF Sion, Switzerland | 10,000 | Clay | Simona Waltert | Emily Arbuthnott Karin Kennel | 2–6, 1–6 |
| Loss | 0–2 | Oct 2016 | ITF Telde, Spain | 10,000 | Clay |  Vivian Wolff |  Lucía de la Puerta Uribe Guiomar Maristany Zuleta de Reales | 5–7, 4–6 |
| Loss | 0–3 | Jul 2017 | ITF Knokke, Belgium | 15,000 | Clay |  Axana Mareen | Quinn Gleason  Luisa Stefani | 4–6, 5–7 |
| Win | 1–3 | Nov 2017 | ITF Oslo, Norway | 15,000 | Hard | Shaline-Doreen Pipa | Ina Kaufinger  Anette Munozova | 6–4, 5–7, |
| Win | 2–3 | Sep 2018 | ITF Clermont-Ferrand, France | 25,000 | Hard |  Isabella Shinikova | Manon Arcangioli Shérazad Reix | 6–2, 7–5 |