The 2019 NFL season officially kicks off Thursday at 8:20 p.m. ET with one of the historic rivalries in the sport, as the Chicago Bears host the Green Bay Packers at Soldier Field. The Bears are favored by three points with an Over-Under of 47.

Before you make any Packers vs. Bears NFL Week 1 picks, make sure you read what SportsLine 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 214-164 on against the spread picks, returning more than $3,200 to $100 bettors. 

The stats guru, whose picks are coveted by fans everywhere, has cashed huge in the world's most prestigious handicapping tournament, the Westgate Las Vegas SuperContest, twice in the past four years. 

And nobody has figured out the Packers like White. He's hit 24 of his last 28 against the spread picks involving Green Bay, an astonishing 86 percent success rate! Anyone who has followed him is WAY UP.

White has scoured the rosters and made his picks for Packers vs. Bears. We can tell you he's leaning Under, but he has also isolated a critical x-factor that has him going BIG on one side of the spread. You ABSOLUTELY need to see what it is before locking in any picks of your own.

Who wins Packers vs. Bears? And which critical x-factor makes one side of the spread hit HARD? ... Join SportsLine right now to see which side of the Packers vs. Bears spread to back on Thursday, all from the top-ranked NFL handicapper who's 24-4 on Packers picks!