Championnat du Sénégal de football
Born in Bignona, Diarra began his senior career with Dakar UC, becoming the Senegal Premier League top scorer with nine goals in the 2002–03 season. He subsequently moved to Jeanne d'Arc, partnering Dame N'Doye on the team that reached the CAF Champions League semi-finals during the 2004 campaign. Diarra was the team's highest scorer with six goals in the process.