Percy Harvin was removed from Minnesota's practice in an ambulance Thursday after collapsing - It was an "episode" related to his chronic migraine headaches. Thankfully, he should be OK moving forward, but this further emphasizes the fact the talented Harvin is perpetually "day-to-day." Of course, it's not like a nagging hamstring injury, meaning he can quickly return to 100 percent, but the unpredictability of this problem (which make no mistake, is serious), is worrisome. With Brett Favre's return, Sidney Rice's lingering hip injury and Harvin's awesome talent (he led all wide receivers in the NFL in broken tackles last year, as a rookie), he has the upside of entering 2011 as a top-10 fantasy WR, but there's also no questioning his risk as well.

Wes Welker started the Patriots' second preseason game Thursday, recording two catches for 20 yards – He was targeted on three straight plays during his six snaps of action, and despite wearing a knee brace, he looked good. There's still plenty of questions that remain unanswered, but I recently reached on Johnny Knox during the fifth round of Yahoo's Friends & Family draft (a .75 PPR league that I'll expand on later) ahead of Welker and am immediately regretting that decision. He's back to being a top-20 fantasy wide receiver.

C.J. Spiller put his mark on the Bills' starting RB job – Again, preseason stats need to be taken with a grain of salt, but check out this highlight. It matters far less than a rookie showing his skills at the NFL level, but as far as preseason action is concerned, Lee Evans' 70-yard touchdown catch was also a reminder he's being undervalued in fantasy leagues with Terrell Owens gone.

Kyle Orton has agreed to a contract extension through the 2011 season – He's no star, but Orton has shown a good grasp of Josh McDaniels' offense and has clearly proven to be Denver's No. 1 quarterback so far. Mainly, this extension is another reason to lower expectations on Tim Tebow's immediate future.