Assistant coaching positions (2003–2011) Miller spent time at several programs as an assistant coach, spending a season at
Western Kentucky (2003–04), two at NC State (2004–2006), one at
Arizona State (2006–07) under former coach
Herb Sendek, two at
Ohio State (2007–09) under
Thad Matta, and two at
Arizona (2009–11) under his brother Sean. While at Arizona, Miller shined as a top recruiter, helping secure Arizona's top 10 recruiting class for 2011 recruits. He also excelled as a game strategist and designed the Wildcats' upset of eighth-ranked Texas to get them to the Sweet 16.
University of Dayton (2011–2017) Miller became the head coach of the
Dayton Flyers men's basketball team in 2011 and turned around a program that had back-to-back disappointing seasons. The Flyers' 78 wins in from 2013–16 matched the best three-year period in school history. Miller's
first season involved rebuilding the program and laying the foundation of a pack-line defense and valuing possessions. Early in the season, Miller stated practices were 75% defense and 25% offense. With an early second round loss in the
2018 Big Ten tournament and no invitation to either the NCAA tournament or NIT, Indiana's first season under their new coach came to a disappointing close with an overall record of 16–15 and 9–9 in the Big Ten. Nevertheless, Miller got off to an impressive recruiting start, including the commitment of five star recruit
Romeo Langford, a
McDonald's-All American, 2018
Indiana Mr. Basketball, and (according to ESPN) the six ranked player in the nation. Despite getting off to a strong start of 12–2, including three conference wins, the
2018–19 Hoosiers struggled down the backstretch of the season. Riddled with injuries and poor shooting, Indiana lost 12 of 13 games before turning things around and finishing the regular season with a four-game winning streak. Indiana failed to receive a bid to the NCAA tournament but earned a 1-seed in the
NIT, where they lost in the quarterfinals, ending the season with an overall record of 19–16 and 8–12 in the Big Ten. For the
2019–20 season, the Hoosiers started off 11–1 before ending their season with an overall record of 20–12 record including a conference record of 9–11. They won their first game of the
Big Ten tournament before it was announced that the rest of the tournament was to be cancelled due to the
COVID-19 pandemic. The
NCAA tournament was later cancelled; the Hoosiers were expected to make the tournament for the first time in Miller's tenure. The
2020–21 season proved to be the most disappointing of Miller's tenure with the Hoosiers ending the season on a six-game losing streak, including a first round loss in the Big Ten tournament against Rutgers. Indiana finished the season with a 12–15 record and a 7–12 Big Ten record. The Hoosiers lost to Purdue twice during the season, making Miller's record against Purdue 0–7. The Hoosiers failed to receive a bid to the 2021 NCAA Tournament. On March 15, 2021, Miller was fired by Indiana. He finished his four seasons at Indiana with a 67–56 record, a 33–43 Big Ten record, and no NCAA tournament appearances.
Rhode Island On March 18, 2022, Miller reached a deal to be the new head coach at
Rhode Island. ==Coaching philosophy==