Cox made an immediate impact in his first season as Coastal posted a then CCU-record 62 pass breakups (12 better than the previous mark) while his kickoff coverage unit led the Big South and ranked 16th nationally by allowing just 17.73 yards per return (an improvement of five yards per return over the previous season). Denzel Rice earned second team All-Big South honors as he tied a CCU single-season record with 12 pass breakups in a season. His total led the Big South and tied for 10th-best in the FCS for 2013. Also, then freshman Samson Baldwin was named Big South Freshman of the Week twice.
In year two, Coastal bettered its own mark with 64 pass breakups and set a school record with 77 passes defended. Coastal's defense led the Big South and ranked 26th nationally in pass efficiency defense. Rice, who went on to sign was once again named second team All-Big South as he and Kamron Summers each tallied 10 PBU. Also, Coastal's kick coverage unit ranked 24th in the NCAA FCS, allowing 17.67 yards per return.
The 2015 season saw even more improvement from the kick coverage unit as it ranked sixth in the NCAA FCS by allowing just 16.07 yards per return.
Cox came to Coastal Carolina after three seasons (2010-12) as a graduate assistant at Maryland. While at Maryland, Cox assisted with the Terrapins' defensive and special teams units. He also served as the junior college recruiter as well as on-campus liaison for potential student-athletes during official and unofficial visits.
Cox also spent time as an intern assistant coach as part of the NFL minority internship program with the Washington Redskins during July and August 2012. While with the Redskins, he contributed with the development and execution of practice elements and worked with the defensive secondary during film sessions.
The Arlington, Va., native spent five seasons in the NFL, playing for the Denver Broncos (2004-07) and Houston Texans (2007-09). While in Denver, Cox served on the special teams units, where he was a finalist for the 2006 AFC Special Team Player of the Year. He helped the Broncos to the AFC West title in 2005 and to the 2006 AFC Championship game. Once in Houston, Cox contributed on the special teams.
Cox played collegiately at Maryland where he earned All-ACC as well as All-ACC Academic honors in 2003. Cox, primarily a corner, ranks seventh on the Terps' all-time list with 10 career interceptions returned for 153 yards. He helped lead Maryland to the 2002 Orange Bowl, 2002 Peach Bowl and the 2004 Gator Bowl. During his time in Maryland, the Terps tallied a 41-20 record and claimed the 2001 ACC Championship.
Cox graduated from Maryland in 2003 with a degree in family studies. He earned a master's of arts degree in minority and urban education from Maryland in 2012.