The Detroit Lions and Jacksonville Jaguars meet for a matinee NFL preseason contest on Saturday. Kickoff at Ford Field is set for 1 p.m. ET. The Jaguars are 3.5-point favorites, while the over/under is set at 38 in the Jaguars vs. Lions odds (see up-to-date odds for every game this week on our NFL odds page).

Before you make any Jaguars vs. Lions picks or any other NFL predictions, you NEED to see which side SportsLine expert R.J. White is on. 

Over the past seven years White, a CBS Sports fantasy and gambling editor, has gone 376-290-24 (56.5%) in the world's most prestigious football handicapping competition, the Las Vegas SuperContest. He also is SportsLine's No. 1 NFL expert, going 535-450-30 on his against-the-spread NFL picks from 2017-22, returning $3,532 to $100 players. Moreover, White is on an incredible 53-34 roll on picks involving the Lions. Anyone who has followed him is WAY UP!

White knows the Jaguars have strong running back play behind starter Travis Etienne. Tank Bigsby is a highly talented rookie with 52 yards in his debut a week ago, and D'Ernest Johnson has averaged 5.2 yards per carry in his NFL career. White also knows that Detroit's defense played extremely well a week ago, even while deploying backups. The Lions yielded only 216 total yards and 3.9 yards per play in the preseason opener.

Now, White has locked in another confident against the spread pick for Jaguars vs. Lions. We can tell you he's leaning Over the point total, but he knows a crucial X-factor makes one side of the spread a MUST-BACK! You ABSOLUTELY need to see what it is before locking in any picks of your own.

Who wins Jaguars vs. Lions on Saturday? And what critical X-factor makes one side of the spread a must-back? ... Join SportsLine right now to see which side of the Jaguars vs. Lions spread to jump on, all from the expert who's red-hot on Detroit picks!