NBA Opening Day is a prime reason to capitalize on the Polymarket sign up bonus and a $25 bonus, which gets credited to you on the house following a $10 deposit. Redeem our Action Network Polymarket promo code ACTION and trade any of three NBA games on tap today, Tuesday, Oct. 20, 2026:
- Celtics vs. Pistons (3 p.m. ET on NBC/Peacock)
- 76ers vs. Knicks (7 p.m. ET on NBC/Peacock)
- Thunder vs. Spurs (9:30 p.m. ET on NBC/Peacock)
I began my day by looking at each of the prediction market promos available to new traders ahead of the Celtics-Pistons game tipping off. The the Polymarket sign up bonus stood out due to being available in 41 states, bonuses having 30 days to be used before expiring, and no trade being required to unlock them.
Explaining the Polymarket Sign Up Bonus
No prediction market apps and their new trader promos gear you up for the NBA regular season quite like the Polymarket sign up bonus. Other prediction market promos require you trade your own money before giving out any bonuses. In contrast, Polymarket just asks for a $10 deposit before instantly making $25 in bonus funds available for you to use.
Still need convinced why Polymarket is the right choice for you to sign up with? I have you covered as someone who has referred many friends and family members, while also educating them on how to use Polymarket:
- Polymarket legally operates in 41 states, with the only exceptions being AZ, IL, MA, MD, MI, MT, NV, OH, and WA. This means you can trade all three NBA games live from their respective stadiums tonight.
- Rather than have you pick against a house line, Polymarket has you trade against other users. NBA odds on Polymarket fluctuate based on how you and fellow traders trade.
- Polymarket lets you buy or sell shares of contracts tied to real-world outcomes up until the final whistle. Take advantage of this live trading feature as you react to how each NBA game unfolds today.
Polymarket Promo Code ACTION Sign-Up Steps
Ready to claim the Polymarket sign up bonus? Follow the steps below verified by Action Network colleague Nick Sterling and I to redeem it and trade the NBA season opener with $25 in bonus funds:
- Begin at Polymarket today by tapping this link.
- Enter your prompted personal information and location details.
- Type in Polymarket promo code ACTION when required.
- Complete a deposit of $10 or more with one of the available banking methods.
- Unlock the $25 Polymarket trade credit once your deposit clears.
NBA Opening Day Predictions
Claim the $25 Polymarket sign up bonus, use the refer a friend program to unlock up to an additional $350 ($25 per referral, up to 14 people), and trade these NBA prediction markets:
- Celtics vs. Pistons prediction (Celtics win YES 52¢): I think the combination of Jayson Tatum and Paul George will be fruitful. While the loss of Jaylen Brown is consequential, I think this Celtics team has enough built-in chemistry and an advantage at head coach in Joe Mazulla to start the season with a win.
- 76ers vs. Knicks prediction (Knicks win by over 4.5 points YES 52¢): Most of the Knicks' championship winning roster returns from last season. While the 76ers have built a superstar-studded roster, I think they'll need a handful of games together to build chemistry and establish roles before hitting the ground running.
- Thunder vs. Spurs prediction: (Spurs win by over 2.5 points YES 50¢): The Thunder lost a few depth pieces, and I need to see what their new rotation looks like. The Spurs are largely in-tact from last season, and I expect their young core to take another massive step forward in their development this year.
18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization.
