Jacobs working to improve his ball skills this offseason

Tim Twentyman

PHOENIX - Typically players make their biggest jump in development in the NFL from Year 1 to Year 2. They understand what the league is all about and what it takes to be good, the game slows down for them, and most importantly they have film they can study from their first season to help tailor their offseason workouts to areas they need to improve.

Unfortunately for Lions th