Here is more information on Roth from Scout.com:
40 time: 4.81
Bio: Former linebacker who totaled 30 sacks and 43 tackles for a loss. As a senior he had eight sacks, 15 tackles for a loss and three forced fumbles. All-Conference choice the past two years.
Positives: Intense and tenacious defender who plays with a great motor. Explodes off the snap with a great first step, plays with excellent leverage and works his hands to stay off blocks. Displays top body control, quickly changes direction or alters his angle of attack. Holds his ground against bigger linemen and rarely off his feet. Displays good footwork getting through the trash laterally, and possesses excellent range for a defensive lineman. Makes plays in pursuit and consistently flying around the action.
Negatives: At times easily ridden from his angle of attack by bigger linemen. Does not always play under control, over-pursues the action and takes himself out of the play.
Analysis: A fiery prospect who plays with a warrior's mentality, Roth's game is characterized by great intellect and tenacity. An excellent pass rusher who makes a lot of plays behind the line of scrimmage, he is also effective against the run and in time should develop into a complete defensive lineman on the right side.
Roth quotes from the 2005 Senior Bowl:
On making the jump to the NFL:
"It is the next level. It is a lot of game preparation, because everyone is a great athlete. You have to get the mental edge, that is the biggest part."
On if teams have looked at him as a linebacker:
"I am looking at a straight defensive end. I haven't had anyone ask me to do anything else. I am just doing what I do best, rushing the passer."
Up next: On Monday, Packer Report will take a closer look at University of Florida linebacker Channing Crowder.