Supremacy in the NFC North will be on the line when the Green Bay Packers host the Detroit Lions on Monday Night Football. Kickoff is at 8:15 p.m. ET. Green Bay is a 3.5-point favorite, while the Over-Under is 45.5. 

Before you make any Packers vs. Lions picks of your own, you NEED to hear what NFL expert R.J. White has to say.

White has been SportsLine's top pro football analyst for two-plus seasons. Over that span, the CBS Sports NFL editor and nationally recognized NFL Draft expert has gone 216-168 on against-the-spread picks, returning $2,981 to $100 bettors.

The stats guru, whose picks are coveted by fans everywhere, has hit it big in the world's most prestigious handicapping tournament, the Westgate Las Vegas SuperContest, twice in the past four years. And no one knows the Packers like White. In fact, he has hit 28 of his last 32 picks involving Green Bay, including all four this season! Anyone who has followed him is WAY up.

We can tell you White is leaning Over on Monday, but his much stronger play is on the spread. White has found a crucial x-factor that has him going BIG on one side! You ABSOLUTELY need to see it before locking in your own picks.

Who wins Packers vs. Lions on Monday Night Football? And what crucial x-factor makes one side of the spread a must-back? ... Join SportsLine right now to see which side of the Packers vs. Lions spread you need to back on Monday, all from the acclaimed expert who's 28-4 on Packers picks!