Monday's NBA Playoffs action continues with Thunder vs. Lakers at 10:30 p.m. ET on Prime Video (Game 4). New users can capitalize on the Underdog promo code TOPACTION from Action Network to unlock $50 in fantasy bonus entries after submitting a qualifying NBA DFS lineup of $5 or more.
Daily fantasy sports provide a legal alternative to traditional sports betting by focusing on player stat projections and pick’em-style contests. Users can build entries around NBA stars like LeBron James, Shai Gilgeous-Alexander, and Austin Reaves while competing for payouts during the Thunder vs. Lakers Game 4.
Register through the module above to claim the Underdog promo code TOPACTION and start building NBA DFS entries on one of the top DFS sites in North America.
| Underdog Promo Code | DFS States Available | Underdog Promo Offer |
|---|---|---|
| TOPACTION | 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 | Play $5, Get $50 in Bonus Entries |
Underdog Promo Code TOPACTION: Build Entry for Thunder vs. Lakers
The Action Network Underdog promo code TOPACTION gives new users a straightforward path into NBA DFS contests. After registration, users only need to submit a $5+ lineup featuring “Higher” or “Lower” picks to activate the $50 in bonus entries.
Below is an example three-pick NBA DFS entry tied to the Thunder vs. Lakers Game 4. Users can combine these selections into either a Standard or Flex lineup:
- LeBron James Higher Than 27.5 Points + Assists: Even at 41 years old, LeBron continues controlling the Lakers offense in high-pressure playoff games. His usage and playmaking volume should remain elevated in Game 4.
- Shai Gilgeous-Alexander Higher Than 31.5 Points: SGA continues operating as the engine of Oklahoma City’s offense after dominating the first round. His ability to attack downhill and generate free throws creates a strong scoring ceiling again in this matchup. Even though he has struggled thus far, he is bound to exceed this mark at some point.
- Chet Holmgren Higher Than 8.5 Rebounds:Chet Holmgren remains one of Oklahoma City’s most important interior pieces because of his length and activity around the basket. With the Lakers expected to attack the paint frequently via LeBron James and other slashers, Holmgren should have consistent rebounding opportunities throughout Game 4.
Sign up using the Underdog promo code TOPACTION to combine these Thunder vs. Lakers picks into either a Standard or Flex entry. Once the lineup is submitted, the $50 in fantasy bonus entries are credited automatically.
Potential payout structures include:
- Win 6x on a Standard entry if all three picks hit
- Win 3x on a Flex entry if all three picks hit, or 1x if two picks are correct
Underdog Registration Steps: Monday, May 11, 2026
Use the following process to create a new DFS account with the Underdog promo code TOPACTION:
- Step 1: Use this link or any resource in this article to download the Underdog app on your mobile device.
- Step 2: Create a username and password for your DFS account.
- Step 3: Enter your email address, date of birth, and required personal information.
- Step 4: Input the Action Network Underdog promo code TOPACTION during registration.
- Step 5: Accept the platform Terms of Use and Privacy Policy.
- Step 6: Deposit funds using an approved Underdog payment method.
- Step 7: Submit a qualifying NBA DFS lineup worth at least $5 on Thunder vs. Lakers Game 4 or another eligible sporting event.
Underdog Terms & Conditions
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-MY-RESET or 1-800-GAMBLER or visit www.ncpgambling.org; AZ: 1-800-NEXT-STEP (1-800-639-8783) or text NEXT-STEP to 53342; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369).
