The San Francisco 49ers host the Green Bay Packers on Sunday Night Football. Kickoff is set for 8:20 p.m. ET. San Francisco is a 3-point favorite, while the Over-Under for total points scored is 48.

Before you make any 49ers vs. Packers picks of your own, you NEED to hear what NFL expert R.J. White has to say.

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 30 of his last 36 against the spread picks involving Green Bay! Anyone who has followed him is WAY up.

We can tell you White is leaning Under on Sunday Night Football, 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 49ers vs. Packers on Sunday 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 49ers vs. Packers spread you need to back on Sunday, all from the acclaimed expert who's 30-6 on Packers picks!