[3] Born in Switzerland, he competed for Ecuador at the 2016 Summer Olympics in Rio de Janeiro in the individual competition, but failed to complete the cross-country phase.

He then qualified to represent Ecuador at the 2020 Summer Olympics.

[4] Riding Altier d'Aurois, he improved on his Rio performance, and eventually placed 41st.

He finished 4th in the team eventing competition at the 2015 Pan Am Games held in Toronto, Canada.

Wettstein was born in Switzerland, and is of French descent through his mother.