Posted by ESPN.com's Kevin Seifert
GREEN BAY, Wis. -- It's a rainy and humid morning here in the Fox River Valley, the perfect kind of day for sitting inside and pounding out some NFL copy. That's what I plan to do here for a good part of the day before heading over to Lambeau Field for the Packers' Family Night scrimmage. (If you're heading this way, bring your rain gear and sweatbands.)
In catching up around the division, my eye stopped on a headline that seemed all-too-familiar: "Jackson fine after hearing pop in knee." Yes, as it turns out, Minnesota quarterback Tarvaris Jackson slipped on some wet turf Friday night and appeared to tweak the left knee he sprained Aug. 1. He limped off the field -- according to reports from the Associated Press, the Star Tribune and Pioneer Press -- but returned after one play.
On his next play, Jackson sailed the ball over the head of receiver Darius Reynaud and into the hands of safety Eric Frampton. I'm sure he wasn't thinking about the injury.
All parties said afterward that Jackson was fine. But for me, it's another reminder of the role injuries have played in stunting Jackson's development into Minnesota's full-time quarterback. Coach Brad Childress said he wouldn't put a grade on the competition between Jackson and Sage Rosenfels. But as much as Jackson entered camp as the favorite, it's going to be hard for anyone with a gimpy knee to win the job.
Continuing around the division:
There has been talk of Percy Harvin returning punts for the Vikings, but second-year receiver Jaymar Johnson is making a run at the job as well, writes Chip Scoggins of the Star Tribune.
Chicago receiver Brandon Rideau has made a number of spectacular catches and is being used as the No. 3 receiver behind Devin Hester and Earl Bennett, writes Vaughn McClure of the Chicago Tribune.
Rideau was the star of Friday's practice, writes Bob LeGere of the Daily Herald.
Detroit coach Jim Schwartz expects the juices to be flowing at an open practice Saturday at Ford Field, writes Carlos Monarrez of the Detroit Free Press.
Rookie Lions receiver Derrick Williams has shown some flashes, according to Tim Twentyman of the Detroit News.
Packers left tackle Chad Clifton said his goal this season is "to show them that I can still do this," writes Tom Pelissero of the Green Bay Press-Gazette.
Tom Silverstein of the Milwaukee Journal Sentinel puts the Packers' interest in quarterback Michael Vick this way: "[They are] intrigued by the possibility of adding a premier athlete but nowhere near the stage where they feel it necessary to pursue him."