From ESPN:
Texas Tech fired defensive coordinator Matt Wallerstedt on Thursday after the coach was suspected of being at the school's football building while under the influence of a controlled substance, sources told ESPN.com.
Wallerstedt was sent home from the facility Monday, according to a source.
The Red Raiders surrendered 438 rushing yards in a 49-28 loss to Arkansas last weekend, but the team's on-field performance was not related to Wallerstedt's dismissal, sources said.
CoachingSearch.com first reported the firing Thursday.
Wallerstedt joined the Texas Tech staff last season, coming over from Texas A&M along with head coach Kliff Kingsbury.
Wallerstedt is expected to be replaced by co-defensive coordinator and linebackers coach Mike Smith, who played for the Red Raiders and graduated from Texas Tech in 2004.
Smith will be Texas Tech's seventh defensive coordinator since 2007.
The Red Raiders are off this weekend, before traveling to play Oklahoma State next Thursday night.
Texas Tech fired defensive coordinator Matt Wallerstedt on Thursday after the coach was suspected of being at the school's football building while under the influence of a controlled substance, sources told ESPN.com.
Wallerstedt was sent home from the facility Monday, according to a source.
The Red Raiders surrendered 438 rushing yards in a 49-28 loss to Arkansas last weekend, but the team's on-field performance was not related to Wallerstedt's dismissal, sources said.
CoachingSearch.com first reported the firing Thursday.
Wallerstedt joined the Texas Tech staff last season, coming over from Texas A&M along with head coach Kliff Kingsbury.
Wallerstedt is expected to be replaced by co-defensive coordinator and linebackers coach Mike Smith, who played for the Red Raiders and graduated from Texas Tech in 2004.
Smith will be Texas Tech's seventh defensive coordinator since 2007.
The Red Raiders are off this weekend, before traveling to play Oklahoma State next Thursday night.
