The 3-3 Detroit Lions host the 5-2 Pittsburgh Steelers on "Sunday Night Football" from Ford Field this week.

The Steelers are favored by a field goal, while the Over-Under, or total number of points Vegas thinks will be scored, stands at 45.5, up a point from where it opened.

Before you make any bets on "Sunday Night Football," you'll want to hear what SportsLine stat geek R.J. White has to say.

Last week, even though Indy was at home, he told readers to lay the field goal with Jacksonville over the totally inept Colts. The result? Jaguars 27, Colts 0, another easy cash. It improved his record to an amazing 50-28 on NFL picks.

Part of his success: White has years of experience analyzing NFL statistics and trends, dating all the way back to Super Bowl XXV. He finished in the top two percent in the nation's most prestigious handicapping contest and understands when NFL spreads are wrong. He's SportsLine's top NFL expert this season.

White knows the Lions are playing at home and coming off a bye, while the Steelers just got up for big wins against the Chiefs and Bengals and could be in for a letdown on the road. Both teams are roughly .500 against the spread this season.

The Steelers are an offensive juggernaut. They're sixth in yards (2,518) and DVOA ranks them fifth on offense and second on defense overall. Running back Le'Veon Bell is second in the league in rushing yards (684) and No. 1 in carries (169) and first downs (42).

Wide receiver Antonio Brown entered Week 8 with over 200 more receiving yards than the closest player, and his 84 targets are over a dozen more than any other wideout (and the same as his jersey number).

SportsLine's projections are calling for almost 300 yards and two scores for Steelers QB Ben Roethlisberger. And Antonio Brown will continue to thrive against a Lions defense that's ranked 22nd against the pass. Meanwhile, RB Le'Veon Bell will have over 130 yards from scrimmage. He's had a monstrous 67 rushing attempts the last two games.

But just because the Steelers have plenty of weapons doesn't mean they cover, especially on the road in a potential trap game.

The Lions are eighth in the league in points per game with help from a defense that leads the NFL with 14 takeaways and nine interceptions.

Five of the Lions' 19 touchdowns this year didn't come on offense. And when the Steelers faced Jacksonville's top-ranked scoring defense three weeks ago, Roethlisberger threw five picks. Many questioned whether he had enough left in the tank.

It's no surprise White is leaning toward the Under, but what about the spread, which he has made his name picking?

He knows there's a critical stat no one is thinking about that ultimately determines the point-spread winner for Steelers-Lions. And he's sharing it over at SportsLine.

So which side should you back in Steelers-Lions on "Sunday Night Football?" Visit SportsLine now to see what critical stat determines which side of Steelers-Lions you need to be all over, all from the expert who has gone 50-28 on NFL picks, and find out.