Simona Waltert

Simona Waltert (born 13 December 2000) is a Swiss professional tennis player. She has a career-high WTA singles ranking of world No. 81, achieved on 9 February 2026, and a best doubles ranking of No. 87, achieved on 2 February 2026. To date, she has won one doubles title on the WTA Tour, one singles and seven 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 major 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.

She reached the top 100 on 6 October 2025, following her first WTA 125 singles final at the Ljubljana Open 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 (incl. Grand Slam tournaments) are included in win–loss records.

Singles Current through the 2026 Italian Open.

WTA Tour finals

Doubles: 2 (1 title, 1 runner-up) LegendWTA 250 (1–1)Finals by surfaceClay (1–1)Finals by settingOutdoor (1–1)

WTA 125 finals Singles: 3 (1 title, 2 runner-ups)

Doubles: 8 (7 titles, 1 runner-up)

ITF Circuit finals

Singles: 19 (8 titles, 11 runner-ups) LegendW100 tournaments (1–0) W80 tournaments (0–1) W60/75 tournaments (2–2) W25 tournaments (0–3) W15 tournaments (5–5)

Doubles: 10 (4 titles, 6 runner-ups) LegendW100 tournaments (0–1)W60/75 tournaments (1–2)W25 tournaments (1–1)W15 tournaments (2–2)

Wins against top 10 players Waltert has a record against players who were, at the time the match was played, ranked in the top 10.