Football fans can get in on the NFL Playoffs Divisional Round this weekend, including the San Francisco 49ers vs. Seattle Seahawks at 8 p.m. ET on FOX, with the latest Underdog promo code TOPACTION. This DFS welcome offer, for new users only, is straightforward: sign up, play $5 on your first fantasy entry, and get $75 in fantasy bonus entries.
Once you submit that $5 first fantasy entry and receive the $75 in fantasy bonus entries, play your bonus entries on more NFL Playoff predictions this weekend, or any sport you prefer.
Underdog Promo Code TOPACTION for NFL Playoff Jan. 17 Games
The Underdog welcome bonus is simple for new users and one of the best DFS promos on the market this week. New Underdog customers can use this link to set up their first-time account. After, deposit and place a $5 first fantasy entry to immediately receive $75 in fantasy bonus entries.
These fantasy bonus entries allow you more opportunities to build lineups and profit cash. Whether you want to play the fantasy entries on more NFL Divisional Round predictions this weekend or other sports, it's up to you.
Take advantage of the $75 bonus with Underdog promo code TOPACTION in AL, AK, AR, CA, DC, FL, GA, IL, IN, KS, ME, MS, MN, NE, NM, NC, ND, OK, OR, RI, SC, SD, TX, VT, VA, UT, WI, and WY.
Top NFL Playoff DFS Picks for San Francisco 49ers vs. Seattle Seahawks on Underdog Fantasy
Here are some of the leading players in this matchup along with the best NFL DFS picks this Saturday for 49ers vs. Seahawks at 8 p.m. ET on FOX:
- Christian McCaffrey: 0.5 rush + rec TDs, 54.5 rush yards, 50.5 receiving yards, 6.5 receptions, 16.5 rush attempts
- Kenneth Walker III: 0.5 rush + rec TDs, 57.5 rush yards, 12.5 receiving yards, 1.5 receptions, 13.5 rush attempts
- Brock Purdy: 0.5 rush + rec TDs, 230.5 pass yards, 1.5 pass TDs, 17.5 rush yards, 22.5 completions
- Jaxson Smith-Njigba: 0.5 rush + rec TDs, 94.5 receiving yards, 6.5 receptions, 9.5 targets, 29.5 longest reception
- Sam Darnold: 0.5 rush + rec TDs, 237.5 pass yards, 1.5 pass TDs, 19.5 completions, 0.5 INTs thrown
- Zach Charbonnet: 0.5 rush + rec TDs, 46.5 rush yards, 1.5 receptions, 12.5 rush attempts
- Jauan Jennings: 0.5 rush + rec TDs, 40.5 receiving yards, 3.5 receptions, 5.5 targets, 17.5 longest reception
The Seahawks look to dominate the 49ers again behind a dual-threat rushing attack from Kenneth Walker III and Zach Charbonnet. On the other side, the 49ers are limited on offense and will need strong performances from Brock Purdy and Christian McCaffrey to pull out a win. Expect a heavy run game from both sides, exceptional defense, and low offensive passing numbers.
Whether you make picks on the stars today or your own 49ers vs. Seahawks predictions, the Underdog promo code TOPACTION is a must for $75 in fantasy bonus entries with your $5 first fantasy entry.
How to Activate the Underdog Promo Code
It's a simple and easy process to claim your $75 bonus today, Jan. 17, 2026:
- Use this secure link or any sign-up module on this page to go to Underdog.
- Sign up for an account and provide your personal information.
- Find and click the "Add Promo Code" button and type in Underdog promo code TOPACTION.
- Place $5 on a fantasy entry, including NFL Divisional Round predictions, for $75 in fantasy bonus entries.
If you are in a sports betting state, stack more bonus value on top of the Underdog sign-up bonus and grab the top NFL betting promos this week from the best sports betting sites on Saturday, Jan. 17, 2026.
Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog Fantasy operates. Terms apply. See assets.underdogfantasy.com/web/PlayandGetTerms_DFS_.html for details. Offer not valid in MD, MI, NJ, NY, OH, and PA. Concerned with your play? Call 1-800-GAMBLER or visit www.ncpgambling.org; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369).
