Texas Tech defensive coach Wallerstedt resigns
Wallerstedt said in a statement issued by the university Thursday that he was stepping side ''because I want the best for the Red Raider program, and this will allow them to go in a different direction on defense.''
Mike Smith, who shared the coordinator title with Wallerstedt, will be in charge of the defense for the rest of the season.
The 48-year-old Wallerstedt joined the staff when former Texas Tech quarterback Kliff Kingsbury was hired as coach last year. They were on the staff together at Texas A&M in 2012.