As the Jaguars approach their pre-season opener, there is still no immediate signing of Derrick Harvey expected. When camp began, Jack Del Rio admitted that there is a point that an unsigned draft pick starts to lose value to the team. Has Derrick Harvey gotten to that point yet? Probably not, but you have to wonder where that line in the mind of the Jaguars coaches. Can Harvey come to camp and make an immediate impact? "A little bit of it is natural ability," admitted veteran defensive end Paul Spicer. "Guys can come in, and off God given talent can get to the quarterback." But it takes more than just talent to make plays consistently, Spicer warns. "There is no successful pass rusher who just came and said 'That's all me, I didn't have to do nothin.' No, you have to work on it." Spicer said. That being said, rookies have, in the past, made big impacts as pass rusher. Jevon Kearse, Dwight Freeny and Simeon Rice are among those who have recorded double digit sacks as rookies. Second round pick Quentin Groves has looked good rushing the passer and has received positive reviews from offensive linemen like Maurice Williams and Khalif Barnes. Groves was also singled out by Del Rio after Friday night's scrimmage. Was that a message for Harvey? Maybe. But Groves' performance in pre-season games might just give the Jaguars more leverage