A weekly look at what the Green Bay Packers must fix:

The Minnesota Vikings almost certainly will come after Packers punter Tim Masthay after the jailbreak that was the Philadelphia Eagles' blocked punt in the fourth quarter of Sunday's game at Lambeau Field.

It was about the only thing that went wrong for the Packers in their 53-20 victory, but it was the second time this season an opponent has blocked one of Masthay's punts.

"I think they identify what they would view as a weakness and they attack that," Packers special-teams coordinator Shawn Slocum said. "One thing about this league, you better stop what you've done poorly or it will get exposed."

Against the Eagles, it was simple breakdown in protection. Linebacker Bryan Braman slipped between center Brett Goode and right guard Nick Perry. Personal protector John Kuhn had blocking responsibilities to the left side, so Braman had a clear path to block the punt.

"The snapper broke down in protection," Slocum said.

Before this season, the Packers had not had a punt blocked since Oct. 14, 2012, at the Houston Texans. Coincidentally, the player who blocked that punt was Braman.

The Packers also had a protection breakdown on a third-quarter Mason Crosby extra point that was blocked.

The field goal/PAT team has played without starting guards T.J. Lang and Josh Sitton the past two weeks because the coaches want to limit their snaps thanks to lingering ankle and toe injuries, respectively. The Packers used defensive end Josh Boyd as the right guard on field goals and extra points, and Boyd appeared to get run over when the Eagles overloaded his side of the line and blocked the PAT.

"I think we just broke down in protection," Slocum said. "I thought the kick was fine. ... We have to be better fundamentally."