[citation needed] Lincou has enjoyed considerable success at the elite level of the game, rising steadily through the ranks since joining the professional squash circuit in 1994.

He has beaten all of the world's top squash players including Peter Nicol, Jonathon Power, David Palmer, Lee Beachill, and many others.

In 2006, he won 4 PSA World Tour titles including the Canary Wharf Squash Classic in London and the prestigious Pakistan Open in Islamabad.

He won 11 titles of the French Nationals and was one of only five players to have maintained themselves in the top 10 without interruption for 10 years at the PSA World Tour.

In October 2012, Thierry retired at the age of 36 after winning the Bluenose Squash Classic, the 23rd PSA World Tour title of his career.