Don't be so sure.....
http://www.dallascowboys.com/team/coaches/derek-dooley/d8044ea5-755c-4575-9d05-ad3424beb9d6
The Dallas Cowboys announced Derek Dooley as the club’s wide receivers coach on February 4, 2013. Dooley comes to Dallas with 15-plus years of coaching experience, including six years as a head coach at the collegiate level and two years as an NFL assistant.
In Dallas, Dooley is re-united with head coach Jason Garrett after the two served on the same coaching staff with the Miami Dolphins from 2005-06.
Prior to joining the Dallas Cowboys, Dooley served as the head coach for the Tennessee Volunteers, where his club finished with a 15-21 record, earning a bowl berth in his first year. Dooley was named Tennessee’s 22nd football coach in 2010 and his first two recruiting classes included the SEC’s leading receiver in 2011 and a first-team All-SEC selection, six Freshman All-Americans, and eight players who were named Freshman All-SEC.
Also during Dooley’s tenure, quarterback Tyler Bray threw 69 touchdown passes and set the school record for highest completion percentage in a game.
Wide receiver Justin Hunter also set a Tennessee freshman record with seven receiving touchdowns and averaged a team-best 25.9 yards-per-catch in 2010.