The average age on the Oakland Raiders’ 90-man minicamp roster is 25.1 years of age. No wonder head coach Dennis Allen said last week he was looking for leaders. Other than a select few veterans, such as Sebastian Janikowski, Charles Woodson, Andre Carter and Josh Cribbs, the Raiders are chock full of players with just a few seasons under their belt and undrafted rookies fighting for a roster spot. After the second day of minicamp practices in Alameda, Allen said he’s comfortable with the balance of experience and youth he has to work with. “I feel good about our leadership on the team,” Allen said. “All of us as coaches, you’d love to have a team full of established veterans that have been there, done that, won championships, done those types of things, but really when you look at it, we’ve got some veterans on this football team that can lead.” One player Allen mentioned by name is defensive end Lamarr Houston, who applied consistent pressure on quarterbacks Matt Flynn and Terrelle Pryor throughout Wednesdsay’s practice after tallying four sacks last season. “I think that [general manager] Reggie [McKenzie] and DA are expecting me to step up being one of the veteran D-linemen here,” said Houston, who has four years of NFL experience at the age of 25. “We have a lot of young guys now. Fortunately for me, I’ve been under the wing of Tommy Kelly and Richard Seymour and they’ve helped me come a long way so far, and Andre Carter as well. They think I’m ready to fill that role and I’m just going to do the best I can in helping this team out.” For Allen, Houston provides an example of what he looks for in all players. “He’s coming into his own as a player and filling a leadership role for us…that’s critical,” Allen said. “You got to have the players in the locker room that buy into the system, that buy into the philosophy of what we’re trying to get accomplished, that preach the same message. When their expectation of themselves is either equal to or greater than what our expectation of them is as coaches, then that’s when you really got something.”