Q. What is going on with Chad Jackson? Hamstring? Maturity issues? Trouble learning the system? Sports Illustrated's Peter King has mentioned Jackson's maturity issues in print. I assume that the Patriots did their due diligence prior to selecting him (plugs from Urban Meyer, worked him out in Foxborough). Do the Patriots have another Terry Glenn on their hands? Bob Pothier, Newport Beach, Calif. A: Most of all, from what I understand, it's his hamstring. There could be maturity issues, but I'm not aware of them. I am now aware of the fact that Jackson's hamstring tightened up on him prior to the Broncos game. Before that, I was assuming he was a healthy scratch, as I probably read too much into comments from Bill Belichick. And I'm going to take Reiss' word - a guy who is there all day, every day - over that of Peter King. Just more confirmation of what we'd thought - but at least this should quiet a few skeptics who for some reason still think there was more to CJ's scratch in Denver then his injury.