Early career Earning a master's degree in education from William & Mary in 1996, Cox embarked on an education and coaching career, which saw him get his start in coaching at
Archbishop Carroll (DC) as an assistant coach for the boys basketball team. In addition to high school coaching, Cox coached AAU basketball with D.C. Assault before landing his first college basketball position as the director of basketball operations under
Jamie Dixon at
Pittsburgh in 2006.
Georgetown Cox then returned to the Washington, D.C. area to serve as an assistant coach at
Georgetown under
John Thompson III from 2007 to 2010.
Rutgers In 2010, Cox joined the basketball staff at
Rutgers under
Mike Rice Jr., reuniting the pair after both being assistants at Pittsburgh. After Rice was suspended by Rutgers during an investigation into his abusive behavior toward players, Cox served as interim head coach of the team, compiling a 3–0 record. However, Rutgers credits all wins and losses to Rice during the 2012–13 season. Cox remained on Rutgers' staff for one season under
Eddie Jordan, before being relieved of his duties following the 2013–14 season.
Rhode Island Cox joined
Dan Hurley's staff at the
University of Rhode Island as an assistant coach in 2014 and was a part of the Rams'
Atlantic 10 conference tournament and regular season title squads that participated in the NCAA Tournament in
2017 and
2018. On April 4, 2018, Cox was elevated to the position of head coach, becoming the 20th head coach in Rhode Island history as he replaced Hurley who departed for the head men's basketball coaching position at
UConn. He finished with a 18–15 record in his first season and 21–9 in his second. Cox was fired on March 11, 2022, after finishing with a 64–55 record in four seasons. ==Head coaching record==