[2][3] He was named Broward County Player of the Year as a junior after rushing for 1,786 yards and 28 touchdowns as the Paladins earned seven victories and qualified for the state playoffs.

As a senior, he rushed for 1,400 yards and 14 touchdowns despite missing three games due to injury, helping South Plantation to nine wins, the district title and a berth in the 8A state playoffs.

Following his senior season, he was selected to play in the Semper Fidelis All-American Bowl, where he was teammates with fellow Arkansas signee Austin Allen.

[4] Also a talented sprinter, Collins ran the third leg on South Plantation's state-champion 4 × 100 m relay (41.98 s), leading to him being named the 2013 Broward County Male Athlete of the Year.

The drama ended the next day when Arkansas head coach Bret Bielema faxed another LOI to Collins, which was signed by his father.

[21] On January 10, 2016, Collins penned an open letter to Arkansas fans announcing his intention to forgo his senior season and enter the 2016 NFL draft.

On March 16, 2016, Collins opted to participate at Arkansas' pro day along with teammates Hunter Henry, Brandon Allen, Jonathan Williams, Denver Kirkland, Mitchell Loewen, Sebastian Tretola, and five others.

[25] At the conclusion of the pre-draft process, Collins was projected to be a third or fourth round pick by the majority of NFL draft experts and analysts.

[32] Upon arriving at the Seahawks' training camp, Collins began competing with Thomas Rawls, Christine Michael, Prosise, Brooks, and Troymaine Pope for the role as the starting running back after it was left vacant by the retirement of Marshawn Lynch.

[36] After a mediocre preseason, head coach Pete Carroll named Collins the fourth running back on the Seahawks' depth chart behind Michael, Rawls, and Prosise.

[37] He made his professional regular season debut in the Seahawks' Week 2 matchup against the Los Angeles Rams, but had no gain on two carries in their 9–3 loss.

[39] On October 16, 2016, Collins had a nine-yard reception and one carry for a two-yard gain and the first touchdown of his career during Seattle's 26–24 defeat over the Atlanta Falcons.

[43] On January 7, 2017, Collins had six carries for 13 rushing yards and one 11-yard reception in the Seahawks' 26–6 victory over the Detroit Lions in the Wild Card Round.

[45] Collins competed with Rawls, Eddie Lacy, Chris Carson, Mike Davis, Prosise, and J. D. McKissic throughout training camp for the job as starting running back.

The Ravens signed Collins and former Chicago Bears running back Jeremy Langford to provide depth after Kenneth Dixon tore his meniscus in training camp.

[49] On September 16, 2017, Collins was promoted to the active roster after Danny Woodhead was injured in the season-opener and was estimated to miss four-to-six weeks.

[50] Head coach John Harbaugh named him the Ravens' third running back on the depth chart, behind Terrance West and Javorius Allen.

[51] On October 10, 2017, Collins earned his first career start against the Pittsburgh Steelers and finished the 26–9 loss with nine carries for 82 rushing yards and a fumble.

[79] Collins was killed in a traffic collision in Lauderdale Lakes, Florida, on the evening of August 13, 2023, when the motorcycle that he was riding crashed into the rear passenger side of an SUV at high speed.