Championnat du Sénégal de football
Born in Ouakam, Dakar Department, Niasse began his football career with hometown club US Ouakam in the second tier. He signed his first professional contract with Ouakam in 2008 and in the 2008–09 season helped his team win the Second League title by scoring 21 goals. Playing as a winger, Niasse also played a key role in Ouakam winning the Senegal Premier League title in 2011.