| Year | Player | Nation |
|---|---|---|
| 2020** | Not Held** | Not Held** |
| 2021 | Clarissa Steiner | Austria |
| 2022 | Bethany Pye | Great Britain |
| 2023 | Aadirai K A | India |
** The 2020 World Championships were cancelled by COVID-19.
Upsets on day 1 of the IWT Swiss Open
Sanne Veldkamp
May 24, 2025
