Miller joined the University of Memphisfootball team as a walk-on. He redshirted in 2013 and then again in 2014 due to an injury. In 2015, he played in 12 games and made four starts, recording 47 receptions for 694 yards with five receiving touchdowns and two rushing touchdowns. In 2016, Miller started all 13 games and set school records with 95 receptions for 1,434 yards and 14 touchdowns. During his senior season in 2017, he broke Duke Calhoun's school records for career receptions and receiving yards, Carlos Singleton's school record for career receiving touchdowns, and his own outright record for single-season receiving touchdowns and shared record for single-game receiving touchdowns.
Collegiate statistics
Professional career
2018
Miller was drafted by the Chicago Bears in the second round, 51st overall, of the 2018 NFL Draft. He was the sixth wide receiver to be selected that year. In his NFL debut against the Green Bay Packers in the season opener, he had two receptions for 14 yards in the 24–23 defeat on NBC Sunday Night Football. In the following game, a 24–17 victory over the Seattle Seahawks on Monday Night Football, he recorded his first professional touchdown reception. On September 23, 2018, Miller caught four passes for 35 yards against the Arizona Cardinals, but left the game early with a dislocated shoulder. On October 14, Miller caught a 29-yard touchdown pass against the Miami Dolphins, his second of the season, in the 31–28 overtime loss. On October 28, Miller caught three passes for 37 yards and a touchdown, his third of the season, against the New York Jets. In Week 10 against the Detroit Lions, Miller caught five passes for 122 yards and a touchdown. The Bears won the game by a score of 34–22. In Week 13 against the New York Giants, Miller caught the game tying touchdown pass in regulation on a trick play. Quarterback Chase Daniel tossed the ball to tight end Trey Burton, who then tossed it to running backTarik Cohen, who threw it to Miller for the touchdown. Miller's touchdown sent the game into overtime, tied 27-27. Unfortunately, the Bears lost to the Giants in overtime 30-27 after the Bears failed to convert a 4th down in overtime. In Week 16 against the San Francisco 49ers, Miller was ejected after he got in a fight with safety Marcell Harris. Miller attacked Harris after he hit quarterback Mitchell Trubisky as he was sliding to the ground. In addition, fellow Bears wide receiver Josh Bellamy and 49ers cornerback Richard Sherman were ejected from the game. Before Miller was ejected, he had three catches for 24 yards and a touchdown. The Bears won the game 14–9. Miller finished his rookie season with 33 catches for 423 yards and seven touchdowns. His seven touchdowns led the team and were the most by a Bears rookie since Willie Gault had seven in 1983; he also ranked second in the league among rookie receivers behind the Atlanta Falcons' Calvin Ridley. He received an overall grade of 60.6 from Pro Football Focus in 2018, which ranked as the 92nd highest grade among all qualifying wide receivers.
2019
During the Thanksgiving Series against the Detroit Lions in Week 13, Miller finished with a career-high nine catches for 140 receiving yards as the Bears won 24–20. In the following week's game against the Dallas Cowboys on Thursday Night Football, Miller caught three passes for 42 yards and his first touchdown of the season in the 31–24 win. In Week 15 against the Green Bay Packers, Miller caught nine passes for 118 yards and a touchdown during the 21–13 loss. Overall, Miller finished the 2019 season with 52 receptions for 656 receiving yards and two receiving touchdowns.
