Miller played college football as a defensive end for the UCF Knights, finishing as the school's career leader in sacks with 35.5.

He was selected by the San Francisco 49ers in the seventh round of the 2011 NFL draft and played for them until 2016, when he was released following an arrest for felony assault charges.

[4] Miller scored his first NFL touchdown on a 30-yard pass from quarterback Alex Smith on November 6, 2011, in a game against the Washington Redskins.

[9] Miller was immediately released from his contract with the 49ers the same day and was charged with seven felonies, including assault with a deadly weapon.

[18] Miller pleaded no contest to misdemeanor disturbing the peace as a result of an incident involving his ex-fiancée on March 5, 2015 and was subsequently ordered to attend domestic violence counseling.