49ers getting by without injured Staley

Posted by ESPN.com's Mike Sando

The 49ers will probably need to start becoming more aggressive on offense at some point here against the Colts.

Their conservative approach to this point makes sense, particularly with Barry Sims at left tackle following Joe Staley's injury.

Quarterback Alex Smith has not attempted much down the field. The 49ers can afford to play this way as long as their lead holds up (it is 7-6 now). But the Colts will presumably score some points as the game progresses.

The 49ers deserve credit for the way they have played to this point. Holding Manning to field goals deep into the second quarter is impressive. They have shut down the run and Aubrayo Franklin just sacked Manning after Manning could not find anyone open.

Impressive, indeed.