Matthew Stafford during the team's August 4 training camp session. (Greg Shamus/Getty)
Matthew Stafford during the team's August 4 training camp session as receiver Calvin Johnson looks on. (Greg Shamus/getty)
Matthew Stafford runs during a pass play during Lions training camp on August 4. (Greg Shamus/getty)
Rookie Matthew Stafford runs with the ball during Detroit's training camp on August 4, 2009 in Allen Park, MI. (Greg Shamus/getty)
Matthew Stafford throws a pass during team drills on August 4, 2009 in Allen Park, MI. (Greg Shamus/Getty)
Matthew Stafford looks to throw a pass during Lions training camp. (Greg Shamus/getty)
Matthew Stafford tosses a pass during Detroit's training camp on August 4, 2009 in Allen Park, MI. (Greg Shamus/getty)
Daunte Culpepper and Matthew Stafford participate during a team drill on Tuesday, August 4 in Allen Park, MI. (Greg Shamus/getty)
Calvin Johnson sprints past cornerback Ramzee Robinson on the same play. (Greg Shamus/getty)
Lions receiver Calvin Johnson lines up during team drills at training camp. (Greg Shamus/getty)