The former college quarterback earned the opportunity in the NFL after a three-day tryout at cornerback during the Vikings rookie minicamp.
Here are five things to know about Roberson, who is listed at 6-foot and 200 pounds.
Roberson is from Indianapolis. He transferred from North Central to Lawrence Central before his sophomore year and wound up being named 2010 Indianapolis Star Indiana Mr. Football after leading the Bears to their first appearance in the Class 5A title game. Roberson completed 144 of 237 passes for 2,611 yards with 24 touchdowns against just four interceptions.