Sign up for Underdog Fantasy and place a lineup on Thursday with any sport. The Underdog Fantasy promo code TOPACTION gives you a 50% deposit match up to $1,000 in bonus funds.
Place your first deposit, and the Underdog Fantasy promo code TOPACTION matches half of it in bonus funds. The $1,000 bonus is only available with a $2,000 deposit.
The 49ers-Seahawks is the premiere sporting event on Thursday, but your lineup can include players from any sport. Create a lineup today with the NFL, MLB, NHL, and CFB.
How to Use the Underdog Fantasy Promo Code TOPACTION
Underdog Fantasy is a DFS app. Here, you must select "Higher" or "Lower" on a player projection. That pick goes into your lineup, with the payout increasing with more picks.
Use the bonus cash with the Underdog Fantasy promo code TOPACTION to create a lineup with two to six picks. A perfect six-pick lineup provides the largest payout of 25x.
The DFS app also requires you to choose between a Standard and Flex lineup. A standard entry means you must win every pick to receive the full payout. A flex lineup gives you your entry back or a small profit with one losing pick.
Top Picks for the 49ers-Seahawks TNF
DK Metcalf Lower Than 5.0 Receptions
The 49ers have done a good job keeping DK Metcalf in check. Metcalf only has one 6+ reception performance in his last seven games against the 49ers. He failed to clear this mark in three of five games in 2024.
Zach Charbonnet Higher Than 13.5 Receiving Yards
Seahawks backup running back Zach Charbonnet has kept a consistent role with Kenneth Walker back in the lineup. Charbonnet has been a receiving threat out of the backfield, recording 16+ yards in every game this season. Seattle is the underdog on Thursday, so a positive game script could work in his favor.
Deebo Samuel Higher Than 55.5 Receiving Yards
Deebo Samuel is coming off a rough 11-yard performance against the Cardinals, but he draws a plus matchup against the Seahawks. Samuel has 100+ yards in four of six career games against Seattle. Aside from last week, he has 54+ yards in every game in 2024.
Underdog Fantasy Sign-Up Steps
Here are instructions to claim the Underdog Fantasy promo code TOPACTION for tonight's 49ers-Seahawks TNF matchup to kick off NFL Week 6:
- Step 1: Click this link or any sign-up module on this page to download the Underdog Fantasy app.
- Step 2: Create a username and password.
- Step 3: Fill in your email, date of birth, and all other required personal information to create a new Underdog Fantasy account.
- Step 4: Enter the Underdog Fantasy promo code TOPACTION to get up to $1,000 in bonus cash from the 50% deposit match welcome offer.
- Step 5: Agree to the Underdog Fantasy Terms of Use and Privacy Policy. Confirm you are at least 18 years old (19+ in Alabama/Nebraska, 21+ in Massachusetts/Arizona).
- Step 6: Click "Sign Up."
- Step 7: Make your first deposit of $10+. It is matched at a 50% rate, up to $1,000 in bonus cash.
- Step 8: Create your first entry at Underdog Fantasy with 49ers-Seahawks TNF picks or any other available sport.
You must be 18+ (19+ or 21+, depending on your state of residence) and live within the applicable state. Full T&Cs apply.