The Nebraska football team returned to practice yesterday for the first time since last Saturday’s 40-7 victory over Chattanooga. While the Husker offense did post 364 total yards in the opener, offensive coordinator Tim Beck still sees a lot of improvement to be made after the first game in his new system. “We made a lot of mental mistakes,” Beck said. “We did a lot of things that we haven’t done since last spring. It blows my mind. We just made a lot of mistakes.” Nebraska welcomes Fresno State to Memorial Stadium on Saturday night. The Bulldogs are 0-1 after a 36-21 loss to Cal in their opener last week. The two programs have never met in their history.