Kelly was ranked the sixth best wide receiver in the nation by both Rivals.com[2] and Scout.com,[3] behind Patrick Turner and DeSean Jackson among others.

Playing as a true freshman in the 2005 season, Kelly led the Sooners in receptions and receiving yards.

After only two seasons with the Sooners, Kelly made it to eleventh on the all-time career receiving list with 1,464 yards.

Kelly suffered a knee injury early in the 2007 Fiesta Bowl and missed most of the game.

Kelly began the 2007 season with a great game against North Texas, receiving for over 150 yards in a 79–10 victory.

On pro day at Oklahoma on April 9, 2008, Kelly ran a disappointing 4.75 and 4.68 in the 40 yard dash.

Afterward, the Oklahoma coaching staff acknowledged a last-minute change in the venue and turf—players must wear appropriate shoes for a given surface.

On February 21, 2017, it was announced that Kelly joined the University of Houston's football program as an offensive graduate assistant.

[12] On March 4, 2019, it was announced that Kelly joined the Texas Christian University's football program as an outside wide-receiver coach.