I haven't trusted Bush in coverage... but this preseason he looked a whole lot better, and surprisingly didn't make huge mistakes. He made a couple of smaller ones but Shields and Hayward made more.
The 49ers run the ball more, and Capers has been blitzing CBs from the outside some and Bush might be better at taking down a RB in the back field.
I think Bush will get the start.
I think Shields might be the best pure coverage guy of the rest.
A healthy House might be the best overall but we don't know if he'll be healthy enough yet.
I really liked Hayward, he made some rookie mistakes in one game but overall I thought he looked more like a 2nd year guy out there and just seemed to get it.
Not excited about this... but I think I'll go with Bush... of the healthy guys he's made the least mistakes, so earned a shot. It's the 49ers who like the run the ball and be physical which matches his style. But I might have a short leash...
Also I'm worried one of the DBs will get burned by the play action with the 49ers run their offense off of. Run the ball, run the ball, fake run the ball and pass.... I think that fake will get one of the DBs if the pressure doesn't get to him.