The Bills made quick work of getting almost half of their draft class under contract. Buffalo signed three of their last four picks in the 2014 NFL draft class Thursday. The club signed fourth-round pick Ross Cockrell and seventh-round selections Randell Johnson and Seantrel Henderson.

Cockrell (6-0, 190) a fourth-round cornerback out of Duke, was glad to officially be a professional.

"I'm excited about it. When you put the pen to paper you can feel how official it is," Cockrell told Buffalobills.com. "You're part of the team now, they drafted me. I always felt like I was part of the team, but now there's no denying it. The dream has been realized and now it's time to go to work."

Cockrell is expected to compete for a depth role in Buffalo's secondary and play a role on special teams.

Johnson (6-4, 245) a linebacker and Henderson (6-7, 331) an offensive tackle, also signed their rookie deals and will be under contract before hitting the practice field this weekend for the team's rookie minicamp.

Only Buffalo's top three draft choices remain unsigned in LB Preston Brown, OT Cyrus Kouandjio and WR Sammy Watkins as well as fifth-round pick G Cyril Richardson. All of the Bills rookies will still be able to participate regardless of whether they have signed a contract.

Just wanted to thank the @buffalobills for the opportunity, excited to get to work and show how I can be a positive addition to the team — Seantrel Henderson (@DaRealisBak_77) May 15, 2014