Randall Cobb prepared to take a bigger role for Packers

The Packers weren’t planning on Randall Cobb having as much of a role as he had last year. But now that the marginalized-in-2012 Donald Driver’s retired and the oft-injured Greg Jennings has moved onto Minnesota, they’re counting on Cobb like never before. And he wants more. The 22-year-old wideout said he’s looking forward to a bigger…