From its launch in 2020 in Sierre to its milestone debut on the ATP Challenger Tour in 2026, the AXA Open de Sion has consistently crowned exceptional clay-court talent.
The tournament’s roll of honour charts an inspiring progression in international professional tennis. It features local breakthroughs, a historic triple-triumph by Swiss Davis Cup representative Rémy Bertola, early titles from future Grand Slam champion Rinky Hijikata, and culminating in Dominic Stricker lifting the singles trophy in our inaugural ATP Challenger edition at TC Valère.
Explore the full list of singles and doubles champions across every edition below:
2026 Winner: Dominic Stricker
First appearances at the Open de Sion. The Swiss Davis Cup player's career high rank is 88.
2025 Winner: Remy Bertola
Third title at the Open de Sion on the day of his 27th birthday. The Swiss Davis Cup player's career high rank is 269.
2024 Winner: Christoph Negritu
Ranked 349th in the world at the end of 2024, the German won the 2024 edition.His best ATP ranking is 108th in the world reach on 27th July 2025.
2023 Winner: Remy Bertola
Remy Bertola entered the 2023 AXA Open Sion as the third seed and ranked 369th in the ATP rankings.
2022 Winner: Remy Bertola
Remy Bertola entered the 2023 AXA Open Sion as the third seed and ranked 369th in the ATP rankings.
2021 Winner: Rinky Hijikata
Rinky Hijikata is an Australian professional tennis player. After a successful career at the University of North Carolina at Chapel Hill, Hijikata turned professional and reached his career-high ATP ranking of world No. 62 in singles on August 26, 2024, and his career-high doubles ranking of world No. 23 on November 10, 2023.
2020 Winner
