# Leonie Küng

Leonie Küng (born 21 October 2000) is a Swiss tennis player. As a qualifier, she reached the singles final at the Junior Wimbledon Championships in 2018.
Küng has career-high WTA rankings of 144 in singles, achieved on 14 September 2020, and 220 in doubles, reached on 26 July 2021. To date, she has won one doubles WTA Challenger title with 10 singles and 11 doubles titles on the ITF Women's Circuit.
Küng played first ITF events in Greece in 2014, and won her first $15k events in singles and doubles at the age of 17, in November 2017 in Oslo. She was the 2021 Swiss national singles champion, and she also won the 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.

## Performance timelines

Key :
| W | F | SF | QF | #R | RR | Q# | DNQ | A | NH |
Only main-draw results in WTA Tour, Grand Slam tournaments, Billie Jean King Cup and Olympic Games are included in win–loss records.

### Singles

| Tournament | 2020 | 2021 | 2022 | SR | W–L | Win% |
| Grand Slam tournaments |||||||
| Australian Open | A | Q1 | Q1 | 0 / 0 | 0–0 | – |
| French Open | Q2 | Q1 | | 0 / 0 | 0–0 | – |
| Wimbledon | NH | Q1 | | 0 / 0 | 0–0 | – |
| US Open | A | Q1 | | 0 / 0 | 0–0 | – |
| Win–loss | 0–0 | 0–0 | 0–0 | 0 / 0 | 0–0 | – |
| WTA 1000 |||||||
| Indian Wells Open | NH | Q1 | | 0 / 0 | 0–0 | – |
| Miami Open | NH | Q1 | | 0 / 0 | 0–0 | – |
| Win–loss | 0–0 | 0–0 | 0–0 | 0 / 0 | 0–0 | – |

## WTA Tour finals
### Singles: 1 (runner-up)

* Legend
* Grand Slam
* WTA 1000
* WTA 500
* WTA 250 (0–1)
* Finals by surface
* Hard (0–1)
* Clay (0–0)
* Grass (0–0)
* Carpet (0–0)
| Result | Date | Tournament | Tier | Surface | Opponent | Score |
| Loss | Feb 2020 | Thailand Open, Thailand | International | Hard | Magda Linette | 3–6, 2–6 |

## WTA Challenger finals
### Doubles: 1 (title)

| Result | W–L | Date | Tournament | Surface | Partner | Opponents | Score |
| Win | 1–0 | Jul 2021 | Bastad Open, Sweden | Clay | Mirjam Björklund | Tereza Mihalíková Kamilla Rakhimova | 5–7, 6–3, [10–5] |

## ITF Circuit finals
### Singles: 20 (11 titles, 9 runner-ups)

* Legend
* W60/75 tournaments (0–1)
* W40/50 tournaments (0–1)
* W25/35 tournaments (4–4)
* W10/15 tournaments (7–3)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Loss | 0–1 | Oct 2016 | ITF Telde, Spain | W10 | Clay | Giulia Gatto-Monticone | 6–2, 1–6, 3–6 |
| Win | 1–1 | Nov 2017 | ITF Oslo, Norway | W15 | Hard (i) | Simona Waltert | 6–4, 6–4 |
| Win | 2–1 | Jan 2018 | ITF Fort-de-France, Martinique | W15 | Hard | Emily Appleton | 6–4, 2–6, 6–4 |
| Loss | 2–2 | Jan 2018 | ITF Petit-Bourg, Guadeloupe | W15 | Hard | Irina Ramialison | 3–6, 5–7 |
| Win | 3–2 | Dec 2018 | ITF Monastir, Tunisia | W15 | Hard | Chiara Scholl | 6–2, 6–1 |
| Win | 4–2 | Dec 2018 | ITF Monastir, Tunisia | W15 | Hard | Bojana Marinković | 6–2, 6–4 |
| Loss | 4–3 | Aug 2019 | ITF Las Palmas, Spain | W25+H | Clay | Mayar Sherif | 1–6, 0–6 |
| Win | 5–3 | Dec 2019 | ITF Antalya, Turkey | W15 | Hard | Georgia Crăciun | 6–2, 6–4 |
| Win | 6–3 | Apr 2023 | ITF Kursumlijska Banja, Serbia | W15 | Clay | Lavinia Tanasie | 7–6$^{(7)}$, 6–1 |
| Win | 7–3 | Apr 2023 | ITF Kursumlijska Banja 2, Serbia | W15 | Clay | Lavinia Tanasie | 6–3, 6–2 |
| Loss | 7–4 | Jun 2023 | ITF Santo Domingo, Dominican Republic | W25 | Clay | Martina Capurro Taborda | 2–6, 4–6 |
| Loss | 7–5 | Jan 2024 | ITF Naples, United States | W35 | Clay | Marie Benoît | 4–6, 6–1, 4–6 |
| Win | 8–5 | Feb 2024 | ITF Wesley Chapel, United States | W35 | Clay | Sophie Chang | 6–4, 3–6, 6–3 |
| Win | 9–5 | Mar 2024 | ITF Santa Margherita di Pula, Italy | W35 | Clay | Sapfo Sakellaridi | 6–4, 6–4 |
| Loss | 9–6 | Apr 2024 | ITF Telde, Spain | W15 | Clay | Ariana Geerlings | 1–6, 1–6 |
| Loss | 9–7 | Jun 2024 | ITF Palma del Río, Spain | W50 | Hard | Linda Klimovičová | 5–7, 4–6 |
| Loss | 9–8 | Sep 2024 | ITF Santa Margherita di Pula, Italy | W35 | Clay | Julia Grabher | 6–3, 0–6, 2–6 |
| Win | 10–8 | Oct 2024 | ITF Loulé, Portugal | W35 | Hard | Irene Burillo Escorihuela | 6–2, 6–1 |
| Loss | 10–9 | Jan 2025 | Brisbane QTC Tennis International, Australia | W75 | Hard | Priscilla Hon | 4–6, 6–4, 2–6 |
| Win | 11–9 | Feb 2025 | ITF Timaru, New Zealand | W35 | Hard | Naiktha Bains | 6–1, 6–2 |

### Doubles: 22 (11 titles, 11 runner-ups)

* Legend
* W60/75 tournaments (1–0)
* W40/50 tournaments (0–1)
* W25/35 tournaments (4–5)
* W10/15 tournaments (6–5)
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Loss | 0–1 | Sep 2016 | ITF Sion, Switzerland | W10 | Clay | Simona Waltert | Emily Arbuthnott Karin Kennel | 2–6, 1–6 |
| Loss | 0–2 | Oct 2016 | ITF Telde, Spain | W10 | Clay | Vivian Wolff | Lucía de la Puerta Uribe Guiomar Maristany | 5–7, 4–6 |
| Loss | 0–3 | Jul 2017 | ITF Knokke, Belgium | W15 | Clay | Axana Mareen | Quinn Gleason Luisa Stefani | 4–6, 5–7 |
| Win | 1–3 | Nov 2017 | ITF Oslo, Norway | W15 | Hard (i) | Shaline-Doreen Pipa | Ina Kaufinger Anette Munozova | 6–4, 5–7, [10–3] |
| Win | 2–3 | Sep 2018 | ITF Clermont-Ferrand, France | W25 | Hard (i) | Isabella Shinikova | Manon Arcangioli Shérazad Reix | 6–2, 7–5 |
| Loss | 2–4 | Jun 2019 | ITF Klosters, Switzerland | W25 | Clay | Isabella Shinikova | Lisa Sabino Gaia Sanesi | 6–3, 1–6, [6–10] |
| Loss | 2–5 | Dec 2019 | ITF Antalya, Turkey | W15 | Hard | Melis Sezer | Georgia Crăciun Ioana Gaspar | 4–6, 6–1, [12–14] |
| Win | 3–5 | Nov 2022 | ITF Solarino, Italy | W15 | Carpet | Lian Tran | Giulia Crescenzi Miriana Tona | 6–2, 6–2 |
| Win | 4–5 | Nov 2022 | ITF Lousada, Portugal | W15 | Hard (i) | Océane Babel | Celia Cerviño Ruiz Tess Sugnaux | 7–6$^{(7–3)}$, 5–7, [10–2] |
| Win | 5–5 | Feb 2023 | ITF Monastir, Tunisia | W15 | Hard | Chantal Sauvant | Tilwith Di Girolami Patricija Paukštytė | 7–5, 6–2 |
| Win | 6–5 | Feb 2023 | ITF Monastir, Tunisia | W15 | Hard | Naho Sato | Eleni Christofi Paris Corley | 6–2, 6–1 |
| Loss | 6–6 | Apr 2023 | ITF Kursumlijska Banja, Serbia | W15 | Clay | Bojana Marinković | Katarína Kužmová Ksenia Laskutova | 5–7, 3–6 |
| Win | 7–6 | May 2023 | ITF Pörtschach, Austria | W15 | Clay | Chantal Sauvant | Valeriia Olianovskaia Linda Ševčíková | w/o |
| Win | 8–6 | Jul 2023 | ITF Santo Domingo, Dominican Republic | W25 | Clay | Ksenia Laskutova | Noelia Bouzo Zanotti Martina Capurro Taborda | 6–4, 3–6, [10–3] |
| Loss | 8–7 | Nov 2023 | ITF Limassol, Cyprus | W25 | Hard | Katy Dunne | Anastasiia Gureva Polina Iatcenko | Walkover |
| Win | 9–7 | Jan 2024 | ITF Naples, United States | W35 | Clay | Marie Benoît | Mayuka Aikawa Hsu Chieh-yu | 6–7$^{(6)}$, 6–2, [10–8] |
| Loss | 9–8 | Feb 2024 | ITF Wesley Chapel, United States | W35 | Clay | Weronika Falkowska | Maria Kononova Maria Kozyreva | 5–7, 1–6 |
| Loss | 9–9 | Mar 2024 | ITF Alaminos, Cyprus | W35 | Clay | Eliz Maloney | Francesca Curmi Despina Papamichail | 3–6, 2–6 |
| Loss | 9–10 | May 2024 | ITF Montemor-o-Novo, Portugal | W50 | Hard | Evialina Laskevich | Madeleine Brooks Eudice Chong | 4–6, 4–6 |
| Loss | 9–11 | Jul 2024 | ITF Rome, Italy | W35 | Clay | Rasheeda McAdoo | Yvonne Cavallé Reimers Aurora Zantedeschi | 4–6, 4–6 |
| Win | 10–11 | Jul 2024 | ITF Rome Open, Italy | W75 | Clay | Vasanti Shinde | Matilde Paoletti Beatrice Ricci | 4–6, 6–4, [10–7] |
| Win | 11–11 | Oct 2024 | Open de Touraine, France | W35 | Hard (i) | Sarah Beth Grey | Anastasiia Firman Chelsea Fontenel | 6–4, 6–2 |

## Junior Grand Slam finals
### Girls' singles: 1 (runner–up)

| Result | Year | Tournament | Surface | Opponent | Score |
| Loss | 2018 | Wimbledon | Grass | Iga Świątek | 4–6, 2–6 |