No. 1 NFL Draft pick Fernando Mendoza is formally beginning his professional career, while questions remain for the Heisman Trophy runner-up.

Mendoza, the No. 1 overall pick in April, is expected to begin his NFL career as a backup in Las Vegas.

Quarterback Fernando Mendoza, the top overall pick in this year’s draft, signed a four-year, $57.27 million contract with the Las Vegas Raiders on Thursday.