Rose was named the head basketball coach at BYU in 2005, replacing
Steve Cleveland and began the first of eleven straight 20-win seasons in 2005–06. Rose inherited a 9–21 team and immediately posted a 20–9 record, the second best turnaround in college basketball in 2005–06. Rose recruited
Jimmer Fredette in 2007, who was selected by all awards as
National Player of the Year. In 2010, Rose coached BYU to their first NCAA tournament victory in 17 years in a double-overtime win against the
University of Florida. In 2011, Rose's team shared the regular season Mountain West title with San Diego State and advanced to the Sweet Sixteen in the NCAA tournament, BYU's first appearance in that round in 30 years. In April 2011, Rose signed a five-year head coaching contract extension with BYU. In 2011–12, Rose coached the team in their first season as members of the
West Coast Conference. Rose coached the Cougars to their 6th straight NCAA tournament appearance. Participating in the First Four round, the Cougars made the largest comeback in NCAA Tournament history, beating
Iona 78–72 after previously trailing by 25. On January 19, 2013, Rose won his 200th game as a Division I coach, in a game against
San Diego. He won his 300th game as a Division I coach on February 4, 2017, in a BYU win against
Portland. Rose retired from coaching BYU's men's basketball team on March 26, 2019. Shortly before the start of what would be Rose's last season, the Cougars were stripped of all 47 wins over the 2015–16 and 2016–17 seasons after guard Nick Emery was retroactively declared ineligible for receiving impermissible benefits from boosters. Even with the vacated games, Rose is still the second-winningest coach in school history, behind only
Stan Watts. ==Personal life==