NBA Opening Night is one of the most opportunistic times of season to sign up with Underdog promo code TOPACTION and submit your first player picks. Submit $5 on a lineup of NBA DFS picks from the triple header of games tonight (all of which are on NBC and Peacock) and wait for it to settle. No matter if your lineup wins or loses, $50 in bonus funds unlock for you.
Celtics vs. Pistons opens the NBA season at 3 p.m. ET as Jayson Tatum and Paul George take on Cade Cunningham. The 76ers vs. Knicks tips off at 7 p.m. ET, with LeBron James and Jaylen Brown making their debuts for Philadelphia against the reigning champions on banner night. Afterwards, Thunder vs. Spurs closes out the night in a game renewing the rivalry between Shai Gilgeous-Alexander and Victor Wembanyama.
Read more about the Underdog promo code TOPACTION and why I recommend it to all eligible new users today as the NBA regular season tips off with a pair of exciting games.
Why Underdog Promo Code TOPACTION Ranks Highly Amongst NBA DFS Promos
Underdog is one of the top DFS sites in the country in terms of player base and features. One of the biggest reasons for their success is the Underdog promo code TOPACTION, which issues an updated $50 sign-up bonus to new users.
Many NBA DFS promos in the industry are deposit matches, which come with additional hoops or steps to walk through. Underdog keeps the process of unlocking $50 straightforward from start to finish:
- Redeem Underdog promo code TOPACTION
- Combine at least three NBA picks from star players into an entry (you must represent at least two teams in your entry)
- Put down $5 on your entry and choose whether to standard play or flex play it (this determines your potential winnings)
- Wait for your entry to settle and get $50 in bonuses when it results as a win or loss
- Use your Underdog bonus funds within 14 days of receiving them before they expire
Underdog Sign-Up Steps
NBA fan and Action Network colleague Lee Tran signed up with Underdog at the same time as I did. Here are the steps we had to go through to create our respective accounts:
- Begin registration by tapping this Underdog sign-up link.
- Enter your personal identifying information and verify your location.
- Type in Underdog promo code TOPACTION when asked for one.
- Complete a $5+ first deposit and submit that $5 on an NBA DFS entry.
- Unlock a $50 bonus once your qualifying entry settles, win or lose.
NBA DFS Picks Today, Oct. 20, 2026
Combine all six NBA Opening Night predictions below into an entry after you claim the Underdog promo code TOPACTION.
- Jayson Tatum (BOS) – Higher Than 25.5 Points (The loss of Jaylen Brown means Tatum is now the bonafide number one option, as George is the clear sidekick at this latter stage in his career. Tatum is far enough removed from his achilles injury that I expect him to be back playing at full health.)
- Cade Cunningham (DET) – Higher Than 24.5 Points (Cunningham is one of the best scorers in the NBA and is the catalyst for the Pistons' offense. The Celtics' defense takes a hit with Brown no longer on the team, and I expect Cunningham to exploit that.)
- Jalen Brunson (NYK) — Lower than 27.5 points (Brunson averaged just 23 points per game in four games against the 76ers a year ago. Now, Philadelphia matches one of the best on-ball defenders in the NBA on Brunson in Jaylen Brown.)
- LeBron James (PHI) — Higher than 15.5 points (James averaged over 20 points per game last season in his age 40 season. I expect him to want to start his tenure with Philadelphia by making a statement, which means over 15.5 points.)
- Shai Gilgeous-Alexander (OKC) — Higher Than 6.5 Assists (The reigning two-time MVP is an underrated playmaker due to his scoring prowess. In his last five games against the Spurs, he averaged 8.2 assists.)
- Victor Wembanyama (SA) — Higher Than 25.5 Points (Wembanyama is the front-runner to win the MVP award this year and averaged 27.3 points in the Western Conference Finals last year. Chet Holmgren is a favorable matchup Wemby routinely exploited last season as well.)
Standard play the four-pick lineup above to win a generous payout if all predictions hit. Choose Flex play for a safer route, which gives you a smaller payout (but a payout nonetheless) when your lineup gets just one or two picks incorrect.
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