Associated Press

NORMAN, Okla. -- Oklahoma linebacker Curtis Lofton said Monday he's decided to enter the NFL Draft.

Lofton, a junior, led OU with 157 tackles last season and set a school record with nine games of 10 or more tackles.

Lofton said he decided Sunday to go pro,  and becomes the second Sooner to declare for the draft. Receiver Malcolm Kelly announced for the draft last week.