[3] Holley initially drew interest from multiple teams, including tryouts from the New England Patriots and the Dallas Cowboys, but went undrafted.
[6] He was later released and joined the Seattle Seahawks for a short period of time prior to the start of the regular season.
[7] Holley worked part-time installing air conditioners until April 2015, but attended the Hamilton Tiger-Cats free agent camp that month.
Due to injuries to Mossis Madu and C. J. Gable, Holley became the starting running back for the Tiger-Cats in June.
[9] He made his CFL debut starting in the season opener against the Calgary Stampeders on June 26, 2015, where he rushed for 24 yards on 8 carries.