# Isabelle Haverlag

Isabelle Haverlag (born 4 March 2001) is a Dutch tennis player who specializes in doubles. She has a career-high doubles ranking of world No. 101, by the WTA, achieved on 3 March 2025. She has won 13 doubles titles on the ITF Women's World Tennis Tour.

## Career

She won her first big title at the 2022 Open de Seine-et-Marne, in the doubles draw, partnering Justina Mikulskytė.
In June 2022, she made her WTA Tour debut in doubles with compatriot Suzan Lamens at her home tournament, the 2022 Libéma Open, where as a wildcard pair they reached the quarterfinals defeating third seeds Kaitlyn Christian and Giuliana Olmos. In July 2024 at the 2024 Budapest Grand Prix she reached the semifinals with Christina Rosca. In February 2025 at the 2025 ATX Open Haverlag and her Polish partner Alicja Rosolska reached the semifinals defeating second seeded pair of former No. 1 doubles player Storm Hunter and former top 10 player Caroline Dolehide en route.

## Performance timeline

Key :
| W | F | SF | QF | #R | RR | Q# | DNQ | A | NH |

### Doubles
## ITF Circuit finals
### Doubles: 36 (14 titles, 22 runner–ups)

* Legend
* W100 tournaments
* W60/75 tournaments
* W40/50 tournaments
* W25/35 tournaments
* W15 tournaments
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Win | 1–0 | Mar 2018 | ITF Amiens, France | W15 | Clay | Julie Belgraver | Lara Salden Camille Sireix | 7–6$^{(4)}$, 6–2 |
| Loss | 1–1 | Aug 2018 | ITF Rotterdam, Netherlands | W15 | Clay | Dewi Dijkman | Suzan Lamens Sviatlana Pirazhenka | 3–6, 6–4, [5-10] |
| Loss | 1–2 | Jul 2019 | ITF Cancún, Mexico | W15 | Hard | Dewi Dijkman | Thaisa Grana Pedretti María Portillo Ramírez | 5–7, 3–6 |
| Loss | 1–3 | Oct 2019 | ITF Tabarka, Tunisia | W15 | Clay | Anastasia Pribylova | Giulia Crescenzi Aurora Zantedeschi | 7–5, 6–7$^{(4)}$, [8-10] |
| Win | 2–3 | Nov 2019 | ITF Solarino, Italy | W15 | Carpet | Anna Popescu | Maria Masini Anastasia Piangerelli | 6–1, 6–1 |
| Win | 3–3 | Mar 2021 | ITF Monastir, Tunisia | W15 | Hard | Anastasia Pribylova | Rina Saigo Yukina Saigo | 6–3, 6–1 |
| Win | 4–3 | Mar 2021 | ITF Monastir, Tunisia | W15 | Hard | Anastasia Pribylova | Anastasia Kulikova Yasmine Mansouri | 6–3, 6–1 |
| Win | 5–3 | Apr 2021 | ITF Monastir, Tunisia | W15 | Hard | Anastasia Pribylova | Alexandra Osborne Andrea Renée Villarreal | 6–3, 6–1 |
| Loss | 5–4 | Apr 2021 | ITF Cairo, Egypt | W15 | Clay | Merel Hoedt | Elina Avanesyan Maria Timofeeva | 6–1, 4–6, [8–10] |
| Win | 6–4 | Feb 2022 | ITF Sharm El Sheikh, Egypt | W25 | Hard | Justina Mikulskytė | Irina Fetecău Simona Waltert | 6–1, 6–2 |
| Loss | 6–5 | Feb 2022 | ITF Santo Domingo, Dominican Rep. | W25 | Hard | Jasmijn Gimbrère | Anna Rogers Christina Rosca | 2–6, 2–6 |
| Win | 7–5 | Apr 2022 | Open de Seine-et-Marne, France | W60 | Hard (i) | Justina Mikulskytė | Sofya Lansere Oksana Selekhmeteva | 6–4, 6–2 |
| Loss | 7–6 | Apr 2022 | ITF Nottingham, United Kingdom | W25 | Hard | Ioana Loredana Roșca | Eudice Chong Cody Wong | 2–6, 3–6 |
| Loss | 7–7 | May 2022 | ITF Platja d'Aro, Spain | W25 | Clay | Valeriya Strakhova | Ángela Fita Boluda Andrea Gámiz | 4–6, 6–3, [3–10] |
| Win | 8–7 | Jul 2022 | ITF Hague, Netherlands | W25 | Clay | Jasmijn Gimbrère | Nikki Redelijk Bente Spee | 6–2, 6–4 |
| Loss | 8–8 | Jul 2022 | Open Araba en Femenino, Spain | W60 | Hard | Justina Mikulskytė | Maria Bondarenko Ioana Loredana Roșca | 6–4, 4–6, [9–11] |
| Loss | 8–9 | Jul 2022 | ITF Nottingham, United Kingdom | W25 | Hard | Jasmijn Gimbrère | Lee Pei-chi Wu Fang-hsien | 3–6, 2–6 |
| Loss | 8–10 | Oct 2022 | Monastir Open, Tunisia | W60 | Hard | Suzan Lamens | Priska Madelyn Nugroho Wei Sijia | 3–6, 2–6 |
| Loss | 8–11 | Feb 2023 | GB Pro-Series Bath, UK | W25 | Hard (i) | Emily Appleton | Lauryn John-Baptiste Katarína Strešnaková | 6–7$^{(4)}$, 4–6 |
| Win | 9–11 | May 2023 | ITF Bodrum, Turkey | W60 | Clay | Oana Gavrilă | Ayla Aksu Harriet Dart | 6–4, 7–6$^{(3)}$ |
| Loss | 9–12 | Jul 2023 | ITF The Hague, Netherlands | W40 | Clay | Jasmijn Gimbrère | Kristina Mladenovic Arantxa Rus | 4–6, 0–6 |
| Loss | 9–13 | Aug 2023 | Internazionali di Cordenons, Italy | W60 | Clay | Eva Vedder | Angelica Moratelli Camilla Rosatello | 6–0, 2–6, [5–10] |
| Loss | 9–14 | Aug 2023 | ITF Oldenzaal, Netherlands | W40 | Clay | Eva Vedder | Gergana Topalova Daniela Vismane | 5–7, 6–2, [5–10] |
| Loss | 9–15 | Oct 2023 | Open Nantes Atlantique, France | W60 | Hard (i) | Emily Appleton | Ali Collins Lily Miyazaki | 6–7$^{(4)}$, 2–6 |
| Loss | 9–16 | Nov 2023 | ITF Pétange, Luxembourg | W40 | Hard (i) | Ali Collins | Alicia Barnett Samantha Murray Sharan | 7–6$^{(4)}$, 1–6, [6–10] |
| Loss | 9–17 | Jan 2024 | ITF Naples, United States | W35 | Clay | Lia Karatancheva | Elvina Kalieva Maria Kozyreva | 0–6, 0–6 |
| Loss | 9–18 | Feb 2024 | ITF Mâcon, France | W50 | Hard (i) | Madeleine Brooks | Silvia Ambrosio Lena Papadakis | 7–5, 5–7, [7–10] |
| Win | 10–18 | Mar 2024 | Trnava Indoor, Slovakia | W75 | Hard (i) | Anna Rogers | Liang En-shuo Tang Qianhui | 6–3, 4–6, [12–10] |
| Win | 11–18 | Oct 2024 | Slovak Open, Slovakia | W75 | Hard (i) | Elena Pridankina | Katarína Kužmová Nina Vargová | 7–5, 6–2 |
| Loss | 11–19 | Oct 2024 | GB Pro-Series Glasgow, United Kingdom | W75 | Hard (i) | Mariam Bolkvadze | Jodie Burrage Freya Christie | 4–6, 6–3, [5–10] |
| Win | 12–19 | Oct 2024 | Hamburg Ladies Cup, Germany | W75 | Hard (i) | Madeleine Brooks | Riya Bhatia Lian Tran | 6–3, 6–2 |
| Loss | 12–20 | Nov 2024 | Ismaning Open, Germany | W75 | Carpet (i) | Carole Monnet | Aneta Kučmová Aneta Laboutková | 6–4, 4–6, [7–10] |
| Win | 13–20 | Nov 2024 | ITF Trnava, Slovakia | W75 | Hard (i) | Madeleine Brooks | Anastasia Dețiuc Aneta Kučmová | 7–6$^{(5)}$, 6–1 |
| Loss | 13–21 | Dec 2024 | Al Habtoor Tennis Challenge, United Arab Emirates | W100 | Hard | Elena Pridankina | Anastasia Dețiuc Anastasia Tikhonova | 3–6, 7–6$^{(7)}$, [8–10] |
| Loss | 13–22 | Feb 2025 | AK Ladies Open, Germany | W75 | Carpet (i) | Emily Appleton | Marie Benoît Dalila Jakupović | 5–7, 6–7$^{(6)}$ |
| Win | 14–22 | Mar 2025 | ITF Trnava, Slovakia | W75 | Hard (i) | Elena Pridankina | Magali Kempen Jessika Ponchet | 6–2, 6–3 |