The No. 19 Michigan Wolverines enter a defining stretch of their season on Saturday when they host the No. 14 Iowa Hawkeyes. Kickoff is at noon ET. The Wolverines are 4-point favorites, while the Over-Under for total points scored is 47.5.

Before locking in any Michigan vs. Iowa picks of your own, you NEED to see what Mike Tierney has to say. The veteran sportswriter, whose work has appeared in The New York Times and Los Angeles Times, has covered college football of all levels for decades. He hit well over 50 percent of his college football spread picks last season and has consistently emerged as one of SportsLIne's top handicappers in all sports.

What's more, he has had a particularly keen eye for Michigan, posting a stunning 8-0 record on against the spread picks involving the Wolverines since he joined SportsLine before the 2017 season! Anyone who has followed him is up HUGE.

Now he's studied Michigan vs. Iowa from every possible angle. We can tell you he's leaning Over and he's also found a critical X-factor that has him jumping all over one side of the spread. You ABSOLUTELY need to see it before you lock in your own picks.

So who wins Michigan vs. Iowa? And what critical X-factor makes one side of the spread a must-back? ... Join SportsLine right now to see which side of the Michigan vs. Iowa spread you should be all over on Saturday, all from the proven college football expert who's a perfect 8-0 on his picks involving Michigan!