A member of the Chamonix club, Blaise participated in his first European Cup race in January 2009 and obtained his first podium in January 2015 at the Val d’Isère downhill.

Blaise made his World Cup debut in March 2013 and scored his first Top-10 in February 2016 with an 8th place in the Jeongseon Super G. In 2017, he was selected for his first World Championships in St. Moritz, taking 14th place in the super G.

He injured two ligaments in his right knee during the pre-season in September 2017, which caused him to be out of competition for an estimated three months. He made his return in time for the 2018 Pyeongchang Winter Olympics, where he took a superb fourth place in the super-G. 

In January 2022, while in the World Cup he had never placed better than eighth in the downhill, Blaise Giezendanner created a surprise on the Streif in Kitzbühel, winning his place on the podium (the first of his career at age 30). Then the following month, at the Olympic Games in Beijing, he signed another Top-10 in the super G with a ninth place.

He will definitely be looking for a great performance during the 2023 Worlds!