AP

After making a major investment in their quarterback, the Packers are making a minor-looking change in how they protect him.

But if it keeps Aaron Rodgers upright, it will be quite significant.

According to Tom Silverstein of the Milwaukee Journal Sentinel, the Packers plan to flip right tackle Bryan Bulaga to left tackle, and swap left guard T.J. Lang and right guard Josh Sitton.

That will leave former left tackle Marshall Newhouse, last year’s undrafted rookie Don Barclay and 2011 first-rounder Derek Sherrod competing for the right tackle job.

“I sat down with Bryan and Josh on Monday and I told them I wanted to make the move to where they’re on the left side,” McCarthy said. “Those two are our most accomplished and experienced players. I told them about the responsibilities and my expectations about playing the left side.

“Some of the things we’ll want to get into schematically as we move forward. They were excited about it.”

Bulaga played left tackle in college, but had settled in on the right side. But Newhouse was a disappointment and Sherrod hasn’t returned from a broken leg, so they chose to go with more of a sure thing after giving Rodgers a $110 million contract extension.

That the Packers have been as successful as they have been without stability up front speaks to Rodgers’ skill, but they hope by putting a more stable group on his blind side, he’ll be better able to shine.