Juergens playing instead of/more than Blackmon (especially since they play different positions).

Until you attend every practice and study the practice films, you can't say whether Blackmon should be playing more. He probably isn't playing more because he is likely making the same types of mistakes in practice. That he got on the field at all is a good sign that he's improving, and I hope we continue to see more and more of him. But if the coaches don't think he's ready yet, well I think they would now since they actually get to observe practice.