He committed to play for LSU and he stayed with the Tigers for a total of five years, having missed one season due to injury, and reached the NCAA tournament Final Four in 2006.

Mitchell was born in Baton Rouge, Louisiana and grew up in nearby Denham Springs, in the Livingston Parish area.

[1] Since his freshman year at Denham Springs High School, playing as a center,[1] he gained recognition at state and national level,[2] being selected as a first-team All-State and All-District and named Livingston Parish MVP.

[12] Mitchell's senior season at Denham Springs saw him average 26.9 points, 10 rebounds, 6 assists, 3.5 blocks and 2.3 steals per game,[1] shooting 67% from the field,[13] and he received multiple awards and honors.

He was named Louisiana Mr. Basketball,[14] Louisiana Gatorade Player of the Year, first-team All-State and All-District, Livingston Parish MVP,[1] and he was selected in the Parade All-America First Team, being named a McDonald's All-American, an ESPN Rise All-American,[15] and being selected to play in the 2005 Roundball Classic.

[7] He chose to wear jersey number 1, and as a true freshman he was selected as a starter by coach John Brady, playing 34.4 minutes per game (2nd on the team behind senior guard Darrel Mitchell):[22] he averaged 11.4 points (4th on the team), 5.6 rebounds (3rd behind Glen Davis and Tyrus Thomas) and 2.8 assists (2nd behind Darrel Mitchell); he recorded three double-doubles during the season, and he was named SEC Freshman of the Week after recording 19 points and 12 rebounds against Southern on November 18, 2005, the first game of the season.

Newly appointed coach Trent Johnson kept Mitchell in the starting five, moving him to the power forward position.

[1] Mitchell initially declared for the 2009 NBA draft, but he later withdrew his name and decided to come back to LSU for his fifth and final season in college basketball.

[28] Mitchell retained his starting role for the fifth consecutive season, and he led the team in scoring (16.8), rebounding (9.4) and steals per game (1.3).

Mitchell signed with the Cavaliers on September 27, 2010, but was waived on October 13, 2010;[30] he then joined the Erie Bayhawks of the NBA D-League.

In 2014 he left Israel for France and joined Champagne Châlons-Reims in the LNB Pro A, the top level of French basketball.