Packers vs. Lions final score: 3 things we learned in Detroit’s 19-7 win

The season's off to a rough start for the Green Bay Packers. Again. They lost to the Detroit Lions by a final score of 19-7 on Sunday afternoon, leaving the NFC North in turmoil, or our predictions for the NFC North anyway. It's only the second time the Packers have scored fewer than 10 points in a game Aaron Rodgers started and played all the way through, and it's the first time Rodgers lost to the Lions since 2010.

The Packers finished the game with just 223 yards and a miserable 4.4 yards per play. Rodgers had 162 yards and one touchdown. Matthew Stafford wasn't lighting the world on fire either. He finished the game with 246 yards and two interceptions. So much for the shootout.

1) Detroit's defense stood tall. We spent the week writing off the Detroit secondary. A matchup with Aaron Rodgers and the Packers looked like too tall of a hill to climb for this bunch too. Green Bay worked hard to establish the run (for some reason) and the Lions allowed just 76 yards on 22 carries, mostly by leaving six men in the box. The secondary held Jordy Nelson and Randall Cobb to just 88 total receiving yards.

2) Green Bay's offensive line is a problem ... so is the defense. The Packers averaged just 3.5 yards per carry on the ground. It was evident what a problem the blocking was when DeAndre Levy blew through the line and tackled Eddie Lacy for a safety. Detroit finished the game with two sacks and six tackles for a loss.

The defense struggled to stop the run, or Reggie Bush at any rate. Speed seems to be a consistent problem for the Packers' defense, especially when they're so easily confused by a little misdirection. Clay Matthews and Julius Peppers were both dealing with injuries by the time the fourth quarter rolled around.

3) The NFC North is wide open. Green Bay was the popular/easy pick to take home the division crown before the season started. And why not? The Packers had a healthy Aaron Rodgers, a better defense and a healthy offensive line. All of that's added up to a 1-2 record so far, the third season in a row Green Bay's started with that record. That comeback win over the Jets last week doesn't look as fluky as it did at the time. And don't write off the Lions. This was a big outing for their defense, especially a secondary that looked so easy to write off heading into this one.