The NFL returns with a Super Bowl rematch between the Patriots and Seahawks tonight, and Underdog promo codeTOPACTION turns a $5 play on their product into $50 worth of bonus entries. Underdog is the best NFL DFS promo on the board for Patriots vs. Seahawks because of a generous $50 bonus which unlocks off a $5 play.
Tap the link below to register using Underdog promo codeTOPACTION before the 8:20 p.m. ET kickoff on NBC from Lumen Field. Keep reading instead if you want more information about what makes Underdog one of the top DFS sites.
What Do You Get With Underdog Promo Code TOPACTION?
| Detail | Info |
|---|---|
| Promo code | TOPACTION |
| Welcome offer | Play $5, get $50 in bonus entries |
| Minimum deposit | $10 |
| Qualifying entry | $5 |
| Turnover requirement | 1x within 14 days |
| Eligible products | Pick'em, Best Ball, Drafts |
| Minimum age | 18+ in most states (19+ in AL and NE, 21+ in AZ, MA and VA) |
| Available 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, WY |
| Code verified | Wednesday, Sept. 9, 2026 |
How to Register With $50 NFL DFS Promo
- Tap any claim bonus link on this page to open Underdog with the offer already attached.
- Enter your name, email, date of birth, address and the last four digits of your SSN.
- Type Underdog promo code TOPACTION in the prompted field during registration.
- Deposit $10 or more, and submit a $5 entry on tonight's NFL Week 1 odds.
Underdog credits $50 in bonus entries after your $5+ entry on Patriots vs. Seahawks predictions settles. Use your bonus on Rams-49ers Thursday, NFL futures odds, or the Sunday slate of games.
Why Sign Up With Underdog Promo Code TOPACTION?
- Playing $5 on Underdog unlocks $50 for you today. Few DFS welcome offers currently come close to that ratio, let alone matching it.
- Deploy bonus entries in a large number of states, including California and Texas.
- Receive quick payouts with PayPal, Venmo and Trustly, starting at a $10 minimum.
Keep in mind that bonus entries sit separate from your cash balance. This means you withdraw winnings secured using your bonus entries, but not the bonus credit itself.
Patriots vs. Seahawks Predictions
Seattle sits as a 3.5 point favorite with a totals market of 44.5. That number drifted down from 5.5 back in May. This suggests the market respects New England far more than the 29-13 Super Bowl scoreline suggests.
- Pick 1: Drake Maye HIGHER 226.5 passing yards. Maye averaged 248.7 passing yards across 21 games last season and hung 295 on this exact Seattle defense in Super Bowl LX. A.J. Brown makes his New England debut, and Josh McDaniels spent all offseason promising a different approach. TreVeyon Henderson is absent as well.
- Pick 2: Jaxon Smith-Njigba LOWER 82.5 receiving yards. Fading the reigning Offensive Player of the Year takes conviction, but Christian Gonzalez supplies it. Gonzalez smothered JSN for 27 receiving yards in February and is fresh off a four year, $135 million extension. Seattle allowed the fewest points in football last year at 17.2 per game, and have a loud Lumen Field behind them as the 12th man tonight.
If you agree with my Patriots vs. Seahawks predictions above, sign up now with Underdog promo code TOPACTION from Action Network and put them on a slip tonight.
Fire NFL DFS Picks on Underdog Today
The NFL season opener hands you one game to focus on, which makes now the cleanest spot on the calendar to register with Underdog promo code TOPACTION, place your $5 qualifier, and collect $50 to use on the rest of NFL Week 1.
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. Offer not valid in MD, MI, NJ, NY, OH and PA. Concerned with your play? Call 1-800-GAMBLER or visit ncpgambling.org.
