Lamine Diack was a Senegalese sports administrator who served as the president of the International Association of Athletics Federations (IAAF) from 1999 to 2015. He played a significant role in promoting athletics globally and was influential in the development of various athletic events and programs. In 2015, Diack was implicated in a corruption scandal involving the cover-up of doping violations in athletics. He was later arrested and faced legal proceedings in France, where he was found guilty of corruption and sentenced to prison. His legacy is marked by both his contributions to sports and the controversies surrounding his leadership.