The Seattle Seahawks and Minnesota Vikings meet in a preseason battle on Thursday. Kickoff at Lumen Field is set for 10 p.m. ET. It is the opener of the preseason schedule for both teams. The SportsLine consensus lists the Seahawks as 4.5-point favorites, while the over/under is 36.5 in the latest Vikings vs. Seahawks odds.

Before you make any Vikings vs. Seahawks picks or any other NFL predictions, you NEED to see which side Josh Nagel is on. 

Nagel is the SportsLine assistant managing editor and a Nevada-based handicapper with more than 20 years of experience in the sports wagering industry. He is also 22-8 on his last 30 against-the-spread picks involving the Seahawks. Anyone who has followed his bets is WAY UP.

Nagel knows both teams struggled in the preseason a year ago. Neither notched a preseason victory, though both reached the NFC Playoffs. Seattle has strong incoming talent with rookie running back Zach Charbonnet and rookie wide receiver Jaxon Smith-Njigba. Minnesota has an intriguing battle in the running back room and steady quarterbacks behind incumbent starter Kirk Cousins.

Now, Nagel has locked in another confident against the spread pick for Vikings vs. Seahawks. We can tell you he's leaning under on 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 Vikings vs. Seahawks on Thursday? And what critical X-factor makes one side of the spread a must-back? ... Join SportsLine right now to see which side of the Vikings vs. Seahawks spread to jump on Thursday, all from the expert who's an outstanding 22-8 on Seahawks picks!