Miller served as Butler's head coach for one season in 2013–14 before requesting a medical leave of absence in October 2014.
He started all 97 games over the next three years, finishing in the school's all-time top five in both made 3-point field goals and assists.
He won the Horizon League's highest individual honor, the Cecil M. Coleman Medal of Honor, and the 2003 Chip Hilton Award, given annual to the player who best exemplifies the values taught by the Chip Hilton literary character – leadership, character, and talent on and off the court.
Subsequently, he held assistant coaching positions at Butler and then Ohio State before quitting basketball after the 2010–11 season to spend more time with his family.
Childhood friend and future teammate Darnell Archey recalled "I’d have to drop the [Nintendo] controller and run out of the room after I won" or the game would never end.
In youth football, he broke his arm playing quarterback, then re-broke it diving for a loose ball in basketball.
In junior high, he ran into a basket support while practicing baton exchanges, badly bloodying his face.
His father, Roger Miller, was a teacher and assistant basketball coach at New Castle Chrysler High School.
[2] That year, New Castle beat Alexandria in the opening round of the Semi-state playoffs with the help of Scott and Brandon Miller.
[8] During Miller's junior year, New Castle achieved a 21–1 record and number 2 ranking entering the sectional playoffs.
[4] Due to a change in the playoff format, New Castle met top ranked Anderson in the sectionals, instead of avoiding them to the Semi-states.
[2] Steve Bennett, who was the head coach during Miller's senior year, remarked, "When he walked into the huddle, you were confident ... Brandon had a championship attitude.
[3] After sitting out a year due to NCAA regulations regarding transfer students, Miller became the Butler Bulldogs' starting point guard for the 2000-01 season.
[19] Powered by strong play from Miller and fellow guards Thomas Jackson and LaVall Jordan, Butler built a 33-point lead over Wake Forest by halftime and cruised to a 79–63 victory.
[3] It looked as though Butler might miss the 2003 NCAA tournament for the second straight year, but they were granted an at-large selection as a 12th seed.
[26] ESPN's Pat Forde described Archey and Miller as a "fundamentally flawless starting backcourt", ascribing much of Butler's success to the duo's play.
[30] He was named to the District V All-Academic team, and won the 2003 Chip Hilton Award for demonstrating strong leadership, character, and talent both on and off the court.
[18][22] Of the latter award, journalist David Woods remarked that it was fitting because "in the clutch, [Miler] was Chip Hilton right out of a Clair Bee novel.
[23] Miller started all 97 games Butler played during his three seasons there, averaging double figures in scoring each year.
[6][18] He scored 1121 points, made 189 three-point field goals, and compiled 305 assists, despite having three different coaches over his three years at Butler.
[23] Xavier's coach, Thad Matta, was hired by Ohio State the following year and brought Miller along, naming him the Director of Basketball Operations.
[23] Missing family vacations and his son Mason's T-ball games had been weighing on Miller when he had an "aha moment" during a retirement party for his father.
It's a job that the time and the effort, and even more than that, where your mind is at on a day-to-day basis, puts you in a position where you can struggle in terms of finding the balance that you need", said Miller explaining his decision to resign.
[33] He remarked, "As a player, assistant coach, and person, Brandon has exemplified The Butler Way and brings a blend of energy, talent and integrity to this role.
Jeff Goodman of ESPN predicted Miller would succeed because he is smart and "shares many of the same values and character traits" of past Butler coaches.
[32] Matt Norlander of CBS Sports said Miller was the "right guy" for the job, but said Butler was facing "huge challenges in the coming years.
"[36] Indianapolis Star reporter Bob Kravitz said the hire was exactly what one would expect from Butler and that it was "impossible" and "foolish" to argue that it was the wrong choice for the program.
[37] Speaking on behalf of the Butler players, Michael Volovic remarked "everyone is really excited to play for coach Miller.
"[31] In Miller's first season, Butler struggled to a 14-17 record (4-14 in the Big East Conference) as the team battled injuries.
[4] Brandon's brother-in-law, Daniel Cox, is now the head coach of basketball at New Castle High School, Miller's alma mater.