I'll offer advice, even though you're an Eagles fan.  

  It may not be good advice though.  
 
Miami's run D is fairly bad.  Lost a couple of D-line starters to injury as well.  If the Niners were smart and wanted to win the game, they'd probably play smashmouth and run Barlow at Miami all day.  But since they're 1-9, not necessarily smart and this is the battle of the two worst, who knows what they're going to do.  All I know is that if I were the head coach, I wouldn't want Rattay (not at 100%) throwing into the Miami secondary.
On the other hand, Blaylock did nothing against a competent NE run D, so that is troubling going up against SD.  But KC does have the better offense.  Hmm... I guess I'd lean Barlow over Blaylock barely...
EDIT Spelling