Could this weekend be all or nothing for Jim Harbaugh? One FOX college football analyst believes that may be the case.

This week, FOX’s Joel Klatt joined Colin Cowherd on The Herd to talk about the week ahead in college football. As it is almost every week, Michigan and head coach Jim Harbaugh were a topic of conversation, as the No. 19 Wolverines host No. 14 Iowa in Ann Arbor.

Michigan enters the game after a lopsided 52-0 win over Rutgers last week, bouncing back from an ugly loss on the road to Wisconsin. And while this weekend presents an opportunity for the Wolverines to notch a marquee win, Klatt says it could actually serve as a defining moment for the Harbaugh era at Michigan.

“I believe that Saturday is the defining moment of the Harbaugh era,” Klatt said. “I don’t know if they win or not, but if they do, there’s at least hope. If they don’t, [they’re in] serious trouble…I think it’s in-defendable if they lose this weekend.”

Saturday’s matchup won’t be easy for Michigan. Not only are the Hawkeyes 4-0 on the season, they’ve also won five of the last six games against the Wolverines. It’ll certainly be a challenge for Harbaugh and company.

Below is the video from The Herd. Klatt and Cowherd talk about Harbaugh around the three-minute mark.