Detroit Lions QB Matthew Stafford has been working a lot with quarterbacks coach Jim Bob Cooter on his footwork. There has been an emphasis on his footwork to improve the timing of his progressions.

Footballguys View: If and when Stafford takes the next step as a quarterback, the Lions will become even more dangerous offensively. Stafford has put up huge numbers as a pro, but he still has mechanical issues and that leads to errant passes. If he cleans up his mechanics and gets faster/more precise going through his progressions he can become a fantastic quarterback.
Lions | Matt Stafford working on his progressions