A 2016 fifth-round pick of the Seattle Seahawks, Collins joined the Ravens in 2017, when he led the team in rushing yards (973) and yards from scrimmage (1,160). His impact on Baltimore's offense was diluted in 2018, as he shared carries with Gus Edwards and Kenneth Dixon. Collins racked up 411 rushing yards (third on team) and eight total TDs (first) in 2018 before being placed on injured reserve with a foot injury.