Since that time, Google has revealed a bounty of fun details about his background.
Here are five things to know about Jefferson:
1) He’s a huge 'Madden' fan, and used it to help pick Ravens
Jefferson is such a big fan of "Madden" that he used the video game when preparing for free agency.
"I am a guy of swagger, so I gotta check the swag at all points before I make a decision," Jefferson told NFL.com. "I put myself in different uniforms on Madden to see what will look better. Ravens did look good, though.