From ESPN Blog:
http://espn.go.com/blog/chicagobears/post/...ed-as-a-starter
So if Knox is firmly entrenched as a starter, and the Bears have eluded to giving Hester some plays off to be more effective in the return game, you would have to think the primary WRs will be DA and Knox. Also, I assume Martz will use a bunch of 3 WR sets as well, making the top 3 basically starters anyway.