The Seattle Seahawks (9-8) and San Francisco 49ers (13-4) will collide on NFL Super Wild Card Weekend 2023 on Saturday. San Francisco ended the season with a 10-game win streak and snagged the second seed in the NFC playoff bracket. Meanwhile, Seattle won two straight games, securing the seventh seed. Kickoff at Levi's Stadium is set for 4:30 p.m. ET. San Francisco is a 9.5-point favorite in the latest Seahawks vs. 49ers odds from Caesars Sportsbook, while the over/under for total points scored is 42. 

Before locking in any Seahawks vs. 49ers picks or any other NFL predictions, you NEED to see which side Josh Nagel is on.

Nagel is a Nevada-based handicapper with more than 20 years of experience in the sports wagering industry. SportsLine's assistant managing editor has covered the wagering industry on a variety of platforms and has won numerous sports handicapping contests. He has hit 54% of his NFL spread picks (749-636-22) since the start of the 2016 season. 

In addition, Nagel has gone an OUTSTANDING 21-8 in his last 29 spread picks involving the Seahawks! Anyone who has followed him is way up.

Nagel knows San Francisco is fifth in total offense (365.6) and eighth in rushing offense (138.8). The 49ers logged 150-plus rushing yards in 10 games this season. Running back Christian McCaffrey is a dual-threat weapon who can dominate in both phases of the game. McCaffrey has racked up 746 rushing yards and 464 receiving yards since joining San Francisco.

Nagel also knows Seattle quarterback Geno Smith is an accurate signal-caller who had a career year. Smith finished with career-highs in completion percentage (69.8%), passing yards (4,282), and passing touchdowns (30). He's tossed at least 300 yards in four games this season.

Now, Nagel has locked in another confident against-the-spread pick for Seahawks vs. 49ers in the NFL playoffs 2023. We can tell you he's leaning Over the 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 Seahawks vs. 49ers on Super Wild Card Weekend? And what critical X-factor makes one side of the spread a must-back? ... Join SportsLine right now to see which side of the Seahawks vs. 49ers spread to jump on, all from the expert who's an OUTSTANDING 21-8 on picks involving Seattle!