Position: Offensive tackle Size: 6-7, 303
Where he will impress: An athletic freak, Johnson transformed himself from junior-college quarterback to top-notch offensive tackle while maintaining his 4.7 time in the 40-yard dash.
Where he will underwhelm: There will be questions about Johnson's relative inexperience as an offensive lineman. He'll also need to continue adding strength to his frame.
What he can gain at combine: Johnson has seen his draft stock skyrocket, and it continues to rise. A strong combine performance could boost him into the top-10.
Current draft projection: First round
ANALYSIS BY JASON KERSEY, Staff Writer
PHOTO BY NATE BILLINGS, The Oklahoman