The undefeated Los Angeles Rams visit the surging New Orleans Saints on the fast track of the Mercedes-Benz Superdome at 4:25 p.m. ET. The Rams are looking to keep their record unblemished against a Saints club that hasn't lost since a Week 1 setback against Tampa Bay. Both clubs are coming off solid performances. The Rams used a clutch late drive and forced a turnover to survive against Green Bay, while the Saints saw their defense come up with several big plays in a road win against the Vikings. In the latest Rams vs. Saints odds, Los Angeles is a 1.5-point favorite after the Saints were favored by as many as two earlier in the week. The over-under has dropped to 57.5, but is still the highest on the Week 9 NFL schedule. Before you lock in your Rams vs. Saints picks, listen to what SportsLine expert R.J. White has to say.

He was SportsLine's most profitable NFL analyst last season and returned $100 bettors a profit of nearly $2,000. The renowned prognosticator has cashed big in the last three prestigious Las Vegas SuperContest two of the last three years and has now turned his eye toward Saints vs. Rams. White has a strong history of success in handicapping these teams too. In fact, he has an outstanding 19-7 mark on spread picks involving the Rams or Saints.

Just last week, White advised SportsLine members that Aaron Rodgers and the Packers would push the Rams to the wire and recommended backing the nine-point underdog. Sure enough, it was a tight game from the outset as Los Angeles held on for a slim 29-27 victory. Anyone who followed White's advice pocketed a comfortable winner. 

Now, he has scrutinized Rams vs. Saints from every possible angle to reveal a strong point-spread pick that he's only sharing at SportsLine. 

White knows that in last week's win over Minnesota, the Saints were efficient and opportunistic against a tough defense. Record-setting quarterback Drew Brees had a meager output by his lofty standards, with just 120 passing yards on 18 completions with one touchdown and one interception. However, he made several key throws to keep drives alive and New Orleans got balance from a run game that contributed 106 yards. 

In a rarely seen storyline for New Orleans, the defense was the difference-maker. The Saints forced a fumble just before halftime that led to a touchdown drive on a short field. They followed it up with a defensive stand to start the second half when they stopped Minnesota on a fourth-down attempt on its own 45-yard line.

Just because the Saints come in hot doesn't mean they'll stay within the spread.

White also knows the Rams (8-0) feature perhaps the most explosive offensive threat in the NFL in running back Todd Gurley, who leads the league with 800 rushing yards. He has run for 11 touchdowns and has four more through the air.

In last week's win over the Packers, Los Angeles rallied from a 10-point deficit and made the key plays when they mattered most. The Rams took the lead on a late field goal, then forced and recovered a fumble from Ty Montgomery on the ensuing kickoff to seal the win.

Jared Goff passed for 295 yards and three touchdowns for the league's second-ranked offense, which compiled 416 yards in a turnover-free performance. 

We can tell you White is leaning toward the Over, but he also has scrutinized Rams vs. Saints from every angle, crunched the stats, and found a crucial X-factor that causes one side of the spread to hit hard. 

Who covers in Rams vs. Saints? And what crucial X-factor makes one side of the spread a must-back? Visit SportsLine now to see which side you need to jump on Sunday, all from the top NFL analyst who's hitting an astounding 73 percent of his picks involving these teams, and find out.