Olivier Anthony Theurillat is an active tennis player and a dedicated trainer.
He won the Bronze Medal at the Senior 2022 Swiss Championships and he owns the National Trainer C Diploma delivered by Swiss Tennis since 2024. 
He was working for the Krippendorf Tennisschule in Bern between 2020 and 2025.
Currently, he is a freelance tennis teacher in the area of Bern.