The Detroit Lions and Ronnell Lewis have agreed to a four-year deal, according to Fox Sports reporter Aaron Wilson.

Lions agreed to four-year deal with fourth-round DE Ronnell Lewis, according to his agent, Kelli Masters

— Aaron Wilson (@RavensInsider) May 10, 2012

Lewis, a University of Oklahoma product, joins seventh-round pick Travis Lewis as the second Oklahoma Sooner to sign in as many days. The Lions' third pick from OU, Ryan Broyles, has not yet signed.

Lewis, 6-2 and 253 pounds, had 59 tackles and 5.5 sacks last season. Big 12 coaches voted him First Team All-Big 12, while media voted him to the second team. He missed the final two games because of a sprained knee.

For more on the Detroit Lions, check out Pride of Detroit. You can also get all of your professional football news over at SB Nation's NFL hub, or tune in to SB Nation's YouTube channel: