He went to INSEP in 17 and graduated in 2000.Played for the Racing Club de France in the national event, Gallet won his first national title in 1996, and throughout his career, he had collected seven National Championships title, 4 in the men's singles and 3 in the men's doubles event partnered with Jean-Michel Lefort.
He represented his country at the 2000 Summer Olympics in the men's singles event, reaching into the second round.