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St. Louis — In his return, the quarterback was red hot. Derek Sherrod was not. And the penalties were in constant supply.

Behind two efficient series from Aaron Rodgers, the Green Bay Packers defeated the St. Louis Rams, 21-7, at the Edward Jones Dome Saturday. It was the quick, painless, easy-does-it start, the Packers were hoping for out of the first-team offense.

“The offense got off to a great start,” coach Mike McCarthy said. “I really liked the production that we were able to get done in the first two series."

More coming soon online. In the meantime, here are your postgame games.

Feel free to provide your own below.

Offense: B-minus

Rodgers' debut couldn’t have gone much better for the Packers. The Packers quarterback was pinpoint-sharp from the pocket, going 11 of 13 for 128 yards. He threw one 3-yard touchdown to Randall Cobb, buying time to let Cobb find wiggle room in the back of the end zone. And Rodgers also had another 10-yard scoring strike to Jordy Nelson wiped out by a penalty.

Green Bay saw the Rodgers/Lacy Effect they’ve been waiting for. The opening series, Green Bay went no-huddle, never substituting a player which didn’t allow the Rams to substitute, either. From there, Rodgers pushed the right buttons at the line. Eddie Lacy totaled 47 total yards, as the Packers laced together a 12-play, 86-yard scoring drive.

Center JC Tretter built off last week with another solid game. Tight end Andrew Quarless, up and down in practice, hauled in one 35-yarder deep right.

Unfortunately for Rodgers, the Packers might be one injury away from Code Red-concern on the edge. The second-team offensive line, specifically left tackle Derek Sherrod, struggled mightily. On Sherrod’s first drive, he was beaten badly twice by Eugene Sims. And into the fourth quarter, Sherrod was burnt by Michael Sam for a sack. Without Don Barclay on deck, the Packers may have to think long and hard at tackle.

Elsewhere, DuJuan Harris (seven carries, 32 yards) coughed up a fumble in the third quarter.

Illegal hands to the face penalties on David Bakthtiari and Corey Linsley wiped out two Packers touchdowns.

The No. 2 offense did put together an impressive 13-play, 81-yard drive in the second half that featured quicks from Michael Hill (27 yards on a screen) and strong hands by Davante Adams. But with a first and goal from the 5, the Packers couldn’t punch it in. Linsley’s penalty and Quarless push-off/drop on fourth down killed the drive.

And Mr. Play a Day, Jeff Janis, made a play Saturday, too. On third and short, he took a short drag 34 yards up the left sideline — zipping past a defender with a good angle — for the touchdown.

Defense: B

The safety play may be better in practice, but it wasn't on Saturday.

Micah Hyde got boxed out by Lance Kendricks on the Rams tight end’s 11-yard touchdown catch. Ha Ha Clinton-Dix was a tick slow in coverage as well, though the rookie did bounce back in the second half with a sack of Garrett Gilbert off the left edge. Green Bay may want to use him near the line of scrimmage (not in space) early this season.

Sam Bradford — who hadn’t played a game in 300 days — was sharp for the Rams. He picked away at Green Bay’s secondary for 101 yards on 9-of-12 passing. Sam Shields, who says he isn’t going to change the way he plays, was flagged for pass interference on a third and 7.

The run defense took a step with both A.J. Hawk (TFL) and Brad Jones (four tackles) playing well. Zac Stacy mustered only six yards on six carries, as the Rams averaged 2.3 yards per carry.

The flags never stopped. In all, there 22 penalties between the two teams.

Hands to the face penalties were rampant. It’s taking Green Bay a while to get adjusted to this. One Chris Banjo interception was wiped out by an illegal hands to the face penalty.

Defensive tackle Mike Pennel’s push for a roster spot surged along. He blew through a double-team for a sack. And Sam Barrington opened the second half by tossing aside Tre Mason for a sack.

Special Teams: B+

After seeing Janis coolly field punts and speed past defenders on his touchdown, it’d be no surprise if the Packers gave him more work at punt returner in practice. He fielded punts on the scout team last week.

Mason Crosby hit field goals from 31 and 49 yards and Tim Masthay was in midseason form. He pinned three of his four punts inside the 20-yard line, including one 56-yarder.