Participating in the 2004 Summer Olympics, he achieved third place in his 100 metres heat, thus securing qualification to the second round. He then achieved eighth place in his second round heat, thus failing to secure qualification to the semi-finals. He also competed at the World Championships in 2001 and 2003. N'Dri has won two medals in 100 metres at the Jeux de la Francophonie; a bronze medal in 2001 and a silver medal in 2005.