Question:  Which coach of a Pac-12 Conference team was also head coach of the Texas Tech Red Raiders football team?

full_context: Document 1: Mike Leach (American football coach): Michael Charles Leach (born March 9, 1961) is an American college football coach. He is the head coach of the Washington State Cougars football team. Previously, he was head coach of the Texas Tech Red Raiders football team, leading the Red Raiders to winning seasons in every year of his tenure.
Document 2: 1996 Washington State Cougars football team: The 1996 Washington State Cougars football team was an American football team that represented Washington State University in the Pacific-10 Conference (Pac-10) during the 1996 NCAA Division I-A football season. In their eighth season under head coach Mike Price, the Cougars compiled a 5–6 record (3–5 against Pac-10 opponents), finished in a tie for fifth place in the Pac-10, and were outscored by their opponents by a combined total of 317 to 314.
Document 3: Washington State Cougars football: The Washington State Cougars football program is the intercollegiate American football team for Washington State University, located in the U.S. state of Washington. The team competes at the NCAA Division I level in the FBS and is a member of the North Division of the Pac-12 Conference (Pac-12). Known as the Cougars, the first football team was fielded in 1894.
Document 4: 2014 Washington Huskies football team: The 2014 Washington Huskies football team represented the University of Washington in the 2014 NCAA Division I FBS football season. Their head coach was Chris Petersen, in his first year at UW after eight seasons as head coach at Boise State. Washington was a member of the North Division of the Pac-12 Conference and the Huskies played their home games on campus at Husky Stadium, in the University District of Seattle. They finished the season 8–6, 4–5 in Pac-12 play to finish in third place in the North Division. They were invited to the Cactus Bowl where they lost to Oklahoma State.
Document 5: 2016 Washington State Cougars football team: The 2016 Washington State Cougars football team represented Washington State University during the 2016 NCAA Division I FBS football season. The team was coached by fifth-year head coach Mike Leach and played their home games at Martin Stadium in Pullman, Washington. They were members of the North Division of the Pac-12 Conference. They finished the season 8–5, 7–2 in Pac-12 play to finish in second place in the North Division. They were invited to the Holiday Bowl where they were defeated by Minnesota.
Document 6: 1997 Washington State Cougars football team: The 1997 Washington State Cougars football team was an American football team that represented Washington State University in the Pacific-10 Conference (Pac-10) during the 1997 NCAA Division I-A football season. In their ninth season under head coach Mike Price, the Cougars compiled a 10–2 record (7–1 against Pac-10 opponents), won the Pac-10 championship, lost to Michigan in the 1998 Rose Bowl, and outscored their opponents by a combined total of 483 to 296. The Cougars and played their home games at Martin Stadium in Pullman, Washington.
Document 7: 2013 Washington Huskies football team: The 2013 Washington Huskies football team represented the University of Washington in the 2013 NCAA Division I FBS football season. The team, coached by fifth-year head coach Steve Sarkisian, was a member of the North Division of the Pac-12 Conference. Sarkisian left the team to become the head coach at USC following the Apple Cup. The team was led by quarterbacks coach Marques Tuiasosopo following Sarkisian's departure. The Huskies played their home games at their on-campus home of Husky Stadium.
Document 8: Texas Longhorns football under Mack Brown: William Mack Brown (born August 27, 1951) is the former head coach of the University of Texas Longhorn football team. Through 2008 the Texas Longhorns football team under Mack Brown have had a winning season for all eleven seasons since Brown took over the program for the 1998 season. As of 2008, they have won at least ten games in each of the past eight seasons; that is the longest active streak in the nation.
Document 9: Mike Sherman: Michael Francis Sherman (born December 19, 1954) is an American football coach and former player. Sherman was the head coach of the Green Bay Packers from 2000 to 2005. Sherman led the Packers to five consecutive winning seasons from 2000–04 and three divisional titles in 2002, 2003, and 2004. He was also the head football coach at Texas A&M University from 2008 to 2011. He has also been a coach in the NFL for the Seattle Seahawks, Houston Texans and Miami Dolphins. Before he started coaching in the NFL, he served as an assistant coach at five different colleges, including Texas A&M, where he coached the offensive line for seven seasons. He is one of few coaches that has been a head coach at every level - high school, college, and in the National Football League. .
Document 10: 1978 Washington State Cougars football team: The 1978 Washington State Cougars football team was an American football team that represented Washington State University in the Pacific-10 Conference (Pac-10) during the 1978 NCAA Division I-A football season. In their first and only season under head coach Jim Walden, the Cougars compiled a 4–6–1 record (2–6 against Pac-10 opponents), finished in last place in the Pac-10, and were outscored by their opponents by a combined total of 296 to 276.
Document 11: 2001 Oklahoma State Cowboys football team: The 2001 Oklahoma State Cowboys football team represented Oklahoma State University in the 2001 NCAA Division I-A football season. Les Miles was in his first season at Oklahoma State as head coach. In the three years prior to Miles' arrival in Stillwater, the Cowboys finished 5–6, 5–6, and 3–8. Oklahoma State posted another losing record (4–7) in Miles' first season at the helm.
Document 12: 2012 Washington Huskies football team: The 2012 Washington Huskies football team represented the University of Washington in the 2012 NCAA Division I FBS football season. The team, coached by fourth-year head coach Steve Sarkisian, was a member of the North Division of the Pac-12 Conference. The Huskies played their home games at CenturyLink Field in Seattle due to renovations at their normal on-campus home of Husky Stadium, also in Seattle. They finished the season 7–6, 5–4 in Pac-12 play to finish in fourth place in the North Division. They were invited to the Maaco Bowl Las Vegas where they were defeated by Boise State.
Document 13: 2003 Washington State Cougars football team: The 2003 Washington State Cougars football team represented Washington State University in the 2003 NCAA Division I-A football season. The defending Pac-10 champions, the team was led by first-year head coach Bill Doba, promoted from defensive coordinator. The Cougars played home games on campus at Martin Stadium in Pullman, with one in Seattle at Seahawks Stadium.
Document 14: 2012 Washington State Cougars football team: The 2012 Washington State Cougars football team represented Washington State University during the 2012 NCAA Division I FBS football season. The team was coached by first-year head coach Mike Leach and played their home games at Martin Stadium in Pullman, Washington. They were members of the North Division of the Pac-12 Conference. They finished the season 3–9, 1–8 in Pac-12 play to finish in last place in the North Division.
Document 15: 2011 Washington Huskies football team: The 2011 Washington Huskies football team represented the University of Washington in the 2011 NCAA Division I FBS football season. The team was coached by third year head coach Steve Sarkisian. They played six of their home games at Husky Stadium and their final home game at CenturyLink Field due to a planned renovation of Husky Stadium; both stadiums are in Seattle, Washington. They are a member of the North Division of the Pac-12 Conference. They finished the season 7–6, 5–4 in Pac-12 play to finish in third place in the North division. They were invited to the Alamo Bowl where they were defeated by Baylor 56–67.
ground_truth: Mike Leach