Scarbrough, who tallied 23 rushing yards on four carries in Monday's victory over Georgia in Atlanta, has not publicly commented on his NFL Draft status.
Ridley, who had 63 receptions for 967 yards and five touchdowns this season, later confirmed his future plans via social media. He finished third on Alabama's all-time career receiving list, only trailing Amari Cooper and D.J. Hall. "Having been thoroughly prepared for that next step, I am truly ready, because in the beginning, I chose THE RIGHT SCHOOL".
Ridley has 2,781 yards receiving with 19 touchdowns in three seasons with the Crimson Tide.
Former Lafayette offensive lineman Jedrick Wills, a freshman at Alabama, also played for the Crimson Tide this season.
The Alabama junior receiver will forgo his final season of college eligibility and enter the 2018 National Football League draft, Ridley announced on Twitter.
He is ranked as the No. 5 draft-eligible running back by Kiper. Fellow freshman Henry Ruggs III caught 12 passes for 229 yards and six TDs.
Harris ran for 1,000 yards and 11 touchdowns this season after running for 1,040 yards and two scores as a sophomore in 2016.