The Detroit Lions may be favored by 8.5 points over the Minnesota Vikings this Sunday, but NFC North battles are almost never simple. In their last nine meetings, six have been decided by a single score or less. And at 3-4, the Vikings are a hungry team fighting to stay alive in the playoff race.

So Detroit can’t coast through this one. Minnesota is as healthy as they’ve been all year, and they still have a sharp coaching staff that knows the Lions well. The question becomes: Which Lions player is most likely to disrupt that preparation and tilt the game in Detroit’s favor?

Which Lions player is key to victory over the Vikings?

For two seasons now, Detroit’s offense has consistently solved the puzzle of a Brian Flores defense. Credit can be spread around—Ben Johnson’s play design, Jared Goff’s command, and the Lions’ deep group of offensive weapons—but one name has repeatedly earned special recognition during Vikings week: All-Pro center Frank Ragnow. His relentless film work against Flores’ exotic pressure looks has helped Detroit stay one step ahead at the line of scrimmage.

With Ragnow sidelined, much of that responsibility shifts to Graham Glasgow. While Goff handles part of the pre-snap reads, the center still carries the bulk of the protection duties. That makes Glasgow’s performance more crucial than ever. His communication, diagnosis of blitzes, and ability to get the offense into the right call will determine how clean the operation is. He’s filled in admirably so far, but this matchup is his toughest challenge yet. If Glasgow rises to the moment, Lions fans can feel confident that even the most unpredictable defense won’t be enough to slow this attack.