During his 14-year professional career, Diatta played for clubs in France, Turkey, England, Scotland, Qatar and Tunisia.

Before moving to Olympique Lyon in 2004, Diatta played 142 games for Stade Rennais, scoring nine goals in that time.

[5][6] After just one month, on 25 April, the 33-year-old Senegalese defender left Hamilton to join Al-Ahli Sports Club in Qatar.

In December 2011 he signed a short-term deal with Championship team Doncaster Rovers, where fellow countrymen El Hadji Diouf and Habib Beye also played for the club.

[12] Diatta was the holding force in the centre of Senegal's defence, and is also tough in the air, which provides a threat in attacking set-pieces.