Pass rush specialist Cliff Avril got an early introduction to bookend offensive tackles Russell Okung and Breno Giacomini during pass-rush drills the past two days competing in some intense battles with his new teammates. The tussles are all in the name of improvement as Avril is penciled in as the Seattle Seahawks’ starting “Leo” defensive end. Avril understands there’s pressure for him to lead the pass rush charge at the start of the year. Seattle’s sack leader for the past three seasons Chris Clemons is on the physically unable to perform list while rehabbing from knee surgery and the team’s second-leading pass rusher from last season Bruce Irvin has been suspended for the first four games for violating the league’s policy on performance enhancing drugs. “That’s what I’ve been trying to do my whole career is being that guy anyway” Avril said. “So I’m up for the challenge. It’s great that we have four other guys that can pass rush real well so I think we’re all going to help each other. For me it’s just getting better and trying to take on that role.” Avril also is undergoing a bit of a transition. He played defensive end in a similar 4-3 defensive front during his five years in Detroit but his role will change some in Seattle where defensive coordinator Dan Quinn will ask the 27-year-old Purdue product to rush from both sides of the defensive line.