ANN ARBOR, Mich. — Let the back-and-forth begin.

It’s hate week in Ann Arbor, with in-state rival Michigan State coming to town on Saturday. The Spartans come in reeling, while the Wolverines are flying high, with the former having just melted down, having surrendered 27 points in the fourth quarter to Illinois to fall to 4-5 on the season, while the latter is just now putting it all together at 7-2.

But, that doesn’t mean that the Wolverines are expecting to cruise to an easy victory.

It is a rivalry, after all, and as Michigan head coach Jim Harbaugh says, there’s no letting up, regardless if it seems that the two teams are moving in different directions.

“On high alert for everything,” Harbaugh said. “Specifically, yeah — we understand that Coach Dantonio is a master motivator. There could be trick plays. Special teams, punt fakes, field goal fakes. Everything needs to be alerted and prepared and ready for.”

But coaches coach in games, and players play in them. So getting the players’ perspective is key.

For the local Michigan products, this game means a little bit more, because they grew up playing with and against a lot of the players on the other side of the ball. Such is true for former Detroit (MI) King standout Ambry Thomas, who played alongside MSU LB Tyriq Thompson and against WR Cody White while in high school.

While there’s chirping back and forth the week of the game, Thomas says he understands what this game means, especially for the reeling Spartans.

“You can’t let them get a heads up,” Thomas said. “You’ve gotta step on their throat and stay there all game. We know they’re going to treat this game like their Super Bowl. We’ve gotta be prepared and just attack them, like they’re gonna try to attack us.”

Of course, talk and the action borne thereof fuels this rivalry.

Last year, it started with the pregame stunt by MSU, as they were late doing their traditional field walk, meaning Michigan was already on the field warming up. The Wolverines refused to vacate, so the Spartans walked through, refusing to unlink for some — like Devin Bush — while others like Khaleke Hudson didn’t make physical contact. After that incident, Bush famously tore up the Spartans logo with his cleats, and after the game, then-defensive end Chase Winovich spoke on FOX about MSU being ‘little brother,’ harkening back to the words spoken by Mike Hart after the 2007 contest.

Those words continue to be spoken in regards to the rivalry, including on Monday, in terms of how both teams treat it.

“Right now, it’s the most important game on our schedule,” Thomas said. “It’s about who’s the big brother, who’s the little sister in this state. That’s what it’s really about. We plan to give it our all, just like they plan to give us their all.

“You come to Michigan to play in this game right here and that team down there in Ohio. But you come to Michigan to play in these two games and these are must wins for us.”

The Spartans may be reeling, especially on the offensive side of the ball, but that’s not the team that the Wolverines see.

Perhaps it’s an added respect given, knowing that the two teams can prove it on the field this Saturday. But MSU’s offense has been nothing short of erratic, with the Spartans gaining 526 yards in the loss to Illinois, but struggling to get much of anything going against the Wisconsins, Penn States and Ohio States of the world.

Still, Thomas sees an offense that could be tough to stop, should everything come together.

“I see a team with a lot of talent, honestly – they just haven’t figured it out yet,” Thomas said. “They have a lot of talent. We know we just have to show up, ball out, do what we do.”

Michigan hosts MSU at The Big House with kickoff set for noon EST on FOX.