Miller is from Tyler, Texas.[1] He attended Tyler Legacy High School and became a top player for the football team.[2] He ran for 1,631 yards and 20 touchdowns as a junior.[3] He then had 166 carries for 1,406 yards and 13 touchdowns, along with 29 receptions for 380 yards and six touchdowns as a senior.[4] In his high school career, Miller set the Tyler Legacy records with 4,908 rushing yards and 65 total touchdowns.[4] He was ranked a four-star prospect and the fourth-best running back – as well as the 78th-best player overall – nationally by 247Sports.[5] He initially committed to play college football for the Texas Longhorns but later flipped his commitment to the Alabama Crimson Tide.[6]
College career
As a true freshman at Alabama in 2022, Miller ran 33 times for 233 yards and two touchdowns, playing behind Roydell Williams and Jase McClellan.[7][8] In 2023, he remained a backup to Williams and McClellan, totaling 41 rushes for 201 yards and a touchdown along with four receptions for 73 yards and a touchdown.[9] After the two left the Crimson Tide in 2024, Miller became one of Alabama's two top running backs for the 2024 season, alongside Justice Haynes.[10][11] Two games into the 2024 season, Miller had his first 100-yard rushing performance, totaling 140 yards on 15 carries with a touchdown in a 42–16 over South Florida.[5][12]