Simona Waltert
Simona Waltert is a Swiss professional tennis player. She has a career-high WTA singles ranking of world No. 88, achieved on 20 October 2025, and a doubles ranking of No. 88, achieved on 27 October 2025. To date, she has won one doubles title on the WTA Tour, one singles and five WTA 125 doubles titles.
Career
2017: Juniors
Waltert was a girls' singles semifinalist at the 2017 Wimbledon Championships, losing to eventual runner-up Ann Li. On the ITF Junior Circuit, Waltert had a career-high combined ranking of No. 9, achieved on 22 January 2018.2019-2023: WTA Tour and major debuts, maiden doubles title
Waltert made her WTA Tour main-draw debut at the 2019 Ladies Open Lausanne, where she received a wildcard for the singles and doubles tournaments.She won her first WTA Tour doubles title at the 2021 Ladies Open Lausanne, partnering Susan Bandecchi.
At the 2022 Ladies Open Lausanne, she earned her first top-10 win as a wildcard over world No. 7 and top seed Danielle Collins, saving three match points in the deciding tiebreak. By defeating Cristina Bucsa the second round, she went one step further to reach her first WTA Tour quarterfinal, where she was beaten by Olga Danilović. She won the 2022 Bronx Open in doubles with partner Anna Blinkova.
Waltert made her Grand Slam debut at the 2023 French Open and won her first match defeating Elizabeth Mandlik, before losing in the second round to Elisabetta Cocciaretto. As a result, she reached a new career-high ranking of No. 107 on 12 June 2023.
2024-2025: First WTA 125 singles title, top 100
Partnering with María Lourdes Carlé, Waltert was runner-up in the doubles at the WTA 125 2024 Montreux Open, losing to Quinn Gleason and Ingrid Martins in the final which went to a deciding champions tiebreak.She reached the top 100 on 6 October 2025, following her first WTA 125 singles final at the 2025 Zavarovalnica Sava Ljubljana in Slovenia and the quarterfinals in Rende, Calabria, as well as winning her first and biggest ITF W100 title in Lisbon.
Waltert won her first WTA 125 singles title at the 2025 Rio Ladies Open, defeating Alice Ramé in the final.
Performance timeline
''Only main-draw results in WTA Tour are included in win–loss records.''Singles
''Current through the 2025 US Open.''WTA Tour finals
Doubles: 2 (1 title, 1 runner-up)
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score | |||||||||||||||||||||||||||||
| Win | 1–0 | 2021 Ladies Open Lausanne – Doubles| | Ladies Open Lausanne, Switzerland | WTA 250 | Clay |  WTA Challenger finalsSingles: 2 (1 title, 1 runner-up)Doubles: 6 (5 titles, 1 runner-up)ITF Circuit finalsSingles: 19 (8 titles, 11 runner-ups)
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