Early in his senior year, he tore his anterior cruciate ligament (ACL), rendering him incapable of playing the remainder of the season.

In his freshman season, the team set school records for its best start (17–0), longest winning streak (17) and highest ranking (3/3).

At age 13, his uncle Lamont Taylor from Fairmont, North Carolina took Miller in to get him away from the Chicago street life.

[4] Late in Miller's 2009–10 junior season, he began receiving significant support from the 2010 ESPN HS Mr. Basketball USA voters who moved him into 11th place.

[8] Following the season he was named a second-team ESPNHIGHSCHOOL.com All-American forward and announced his transfer to Westchester Country Day School of High Point where his close friend Deuce Bello played.

[9] The following summer SLAM Magazine rated him as the top prospect in the class of 2011 before he appeared at the June 2010 Pangos All-American Camp.

[13] In June 2010, Miller was the sixth man for the gold medal-winning team at the FIBA Americas Under-18 Championship.

[17] Based on his play during the high school basketball season, AAU tournaments and national summer camps, experts from ESPN RISE, ESPN College Basketball Recruiting and other talent evaluators selected him to the August 2010 Boost Mobile Elite 24 event.

[20] The following week, he played at the UIC Pavilion in the fourth annual adidas Nations global experience with many of the world's elite high school players.

[21] In the September 2010 ScoutsFocus Elite 80 All Star Game in Greensboro, North Carolina, after fans heckled him that his team was trailing, he rattled off 18 consecutive points.

[22] Following in the footsteps of basketball players like LeBron James, Kevin Love, Tyreke Evans and Harrison Barnes, Miller was the 2010–11 high school diary keeper for SLAM Magazine.

[24] At the time he was listed in third in the 2010-2011 Preseason ESPNHS Mr. Basketball USA voting (behind Austin Rivers and Mike Gilchrist).

[26] In December 2010, Miller suffered a torn ACL, ending his senior season, and high school career.

[31] He was also a first team All-American selection by SLAM Magazine (along with Gilchrist, Rivers, Bradley Beal, Anthony Davis and Marquis Teague).

[47] Nonetheless, Dime Magazine included Miller, Jones and Bello in its list of Top 25 Breakout Players & Teams To Watch In The NBA, College & High School This Season.

[58] By the end of December 2011, Miller had contributed to the school's first ever 13–0 start and a school-record tying 13-game winning streak.

[61] On January 14, Miller posted 21 points as Baylor (4 AP/4 Coaches) defeated Oklahoma State, raising their record to 17–0.

[75] In the Energy's third game, first victory and home opener, Miller posted a double-double with 17 points and 12 rebounds on December 1.

[76] After three D-League games in which he averaged 14.0 points, 10.7 rebounds and 2.3 assists in 29.0 minutes, the Nuggets recalled Miller on December 2.

[81] Prior to his second season, head coach Brian Shaw described Miller as if he has the potential to be comparable to Paul George.

[84][85] With Wilson Chandler suffering from a groin injury, Miller made his first NBA career start on January 9, 2014, against the Oklahoma City Thunder with Kevin Durant as his defensive assignment.

[91] On April 6, Miller, who was still starting in place of Chandler, scored a career-high 19 points in an overtime contest against Houston.

[99] Following the expiration of his second 10-day contract, he parted ways with the Kings on February 10 and returned to the Bighorns with the intentions of playing in the D-League All-Star Game.

[120][121] On August 29, 2023, he signed with the TNT Tropang Giga of the Philippine Basketball Association (PBA) as one of the team's import for its participation in the 2023–24 East Asia Super League.

[122] He was eventually selected to play as the team's temporary import in place of Rondae Hollis-Jefferson for the first game of the 2023–24 PBA Commissioner's Cup.

[123] Miller's older sister Keisha was killed in a car accident in 2005 at the age of 17, which inspired his jersey number change.