[3] Jefferson entered the 2008 NBA draft and hired an agent, thereby ending his college eligibility.
[10] In March 2015, Jefferson was kicked out of the team for unprofessional conduct and stretching during the national anthem.
[13] On May 11, 2016, he signed with the Capitanes de Arecibo of Puerto Rico for the rest of the 2016 BSN season.
[14] On August 17, 2016, Jefferson signed with the Venezuelan club Guaros de Lara.
[19] On October 2, 2018, Jefferson signed a deal with Italian club Pallacanestro Cantù.
[20] On July 29, 2019, he signed with Virtus Roma of the Italian Lega Basket Serie A (LBA).