Halftime: 49ers 14, Packers 3

SCORING PLAYS
49ERS — DeShaun Foster 1-yard run, 4:15 (Joe Nedney kick). Key plays: There were plenty on a 15-play, 87-yard drive, but the biggest were a pair of long completions by San Francisco QB J.T. O’Sullivan — both against Packers CB Jarrett Bush. Foster just stretched the ball across the goal line on fourth down after being stuffed on three previous plays.

49ERS — Josh Morgan 59-yard pass from J.T. O’Sullivan (Nedney kick), :58. Key play: It appeared to be a blown assignment as Morgan got free past CB Will Blackmon down the left side and S Atari Bigby was too late on the help.

NEWS, NOTES AND ANALYSIS
* Make that three sacks of Aaron Rodgers, and this one was on the quarterback. Rodgers held the ball far too long on third-and-2, and LB Roderick Green eventually got separation from LT Chad Clifton. Not the start Aaron Rodgers wanted on his first four drives: 5-for-10 passing for 27 yards. Could be worse — he could be ex-Packer J.T. O’Sullivan, who has started 3-for-10 for 30 yards and an interception.

* The Packers began pulling their starting defense after four drives, replacing Al Harris and Charles Woodson with Bush and Tramon Williams. Blackmon is working as the nickelback.

* After the 49ers drew boos from the crowd by sandwiching timeouts around a false start penalty, they got bailed out when Bush lost Jason Hill on an out route that turned into a 27-yard completion. Then, Bush got beat for by Josh Morgan for a 22-yard gain on a corner route. He’s not doing himself any favors. This feels a little like the game last Sept. 30 at Minnesota in which the Vikings targeted Bush over and over.

* Daryn Colledge replaced Josh Sitton at right guard with the starting line — which promptly gave up a fourth sack on second down, with Ronald Fields overpowering C Scott Wells and into Walter Curry, who was working against Spitz. The pressure keeps coming up the middle. Shortly after, Junius Coston replaced Wells.

* Most of the Packers’ starting defense headed to the bench when the 49ers got the ball back inside the 2-minute warning. Only the safeties remain.

* Rookie CB Pat Lee provided one of few bright spots for the Packers in this one with a big hit on an incompletion to RB DeShaun Foster. The NFL might look at that one, though.

* Another bright spot: RB Vernand Morency's high-stepping 20-yard gain off a third-down screen pass. Morency has showed renewed burst through camp. He should get more opportunities going forward, especially since he's also a sound blocker.

* Rodgers almost put the perfect cap on an atrocious first half for the Packers when he threw an interception to Dashon Goldson — but Goldson had the ball go through his hands, and it was overturned upon review. It doesn’t change a terrible decision by Rodgers, who was trying to hit Donald Driver on a corner route in spite of blanket coverage by Donald Strickland and Goldson helping.

* Didn’t matter much, as the Packers punted two plays later. Also, Driver caught a ball on second down and came up limping, though he stayed in the game. Pretty much a brutal 30 minutes all around for the Packers.

INJURY UPDATE
* Packers MLB Nick Barnett pulled himself from the game with about 9 minutes to play in the half after getting stiff-armed on an attempted tackle of TE Delanie Walker, who was running right on an end around. Barnett tried to grab Walker by the shoulder pads, but Walker outmuscled him, and Barnett came down hard on his left hip. Abdul Hodge replaced Barnett. The Packers have to hope it’s nothing worse than a bruise.

— Tom Pelissero, tpelisse@greenbaypressgazette.com