Rain in May has handed MLB fans a gift in August. The Cardinals vs. Reds is now set to take place twice on Monday, and there is no better day for anyone claiming the Polymarket promo code ACTION.
Deposit $10, get $20 in bonuses. No qualifying trade is needed. No settling and waiting. Your bonus can be in your account before first pitch of Game 1, which means you can split the afternoon trading your own $10 and the evening trading the house's $20. Five or six hours of watching these two teams could sharpen your positions and trades before the 6:40 pm matchup.
What does the Polymarket promo code ACTION offer?
| Polymarket Promo Code | ACTION |
|---|---|
| Polymarket Promo Code Offer | Deposit $10, Get $20 in Bonuses |
| Minimum Deposit | $10 |
| Qualifying Trade Required | No |
| Bonus Funds | $20, credited automatically |
| Platform | Polymarket US app (iOS and Android) |
| Eligibility | 18+, most US states — not available in AZ, IL, MA, MD, MI, MT, NV, and OH |
| Verified | Aug. 17th, 2026 |
How to claim the Polymarket promo code ACTION
- Use our Polymarket promo code links to start the process
- Download the Polymarket app from the iOS or Android stores
- Create a new account with your email address
- Enter the Polymarket promo code ACTION
- Complete identity verification in the app. Most sign-ups clear in a few minutes
- Deposit at least $10.
- Your $20 in bonus funds is credited automatically once the deposit clears. No qualifying trade required
- Open the MLB markets, find Cardinals vs. Reds, and you are trading
Why Use the Cardinals vs. Reds for the Polymarket promo code?
Most sign-up offers ask you to trade first and reward you later. The Polymarket promo code ACTION runs the other way around, and a doubleheader is a perfect chance to make the most of it.
- Game 1: Cardinals vs. Reds, 1:40 pm ET
- Game 2: Cardinals vs. Reds, 6:40 pm ET
Here is what we will be doing with today's MLB doubleheader. I plan to sign up with ACTION this morning, deposit my $10, and see my $20 bonus land within a few minutes.
I’m going to use my own $10 on the afternoon game. I will have already made a trade and have watched these two lineups for nine innings.
That last part matters the most. Game 1 is where we learn how the price drifts when a starter struggles through the third. How quickly the market reprices on a two-run double. Whether I want to sit in a position to settle or close it out early.
This way I can carry two separate reads into Game 2. One on how the Cardinals vs Reds Game 2 may go. Another on how the Polymarket MLB trading works. The learning lets me use my $20 to the fullest, so the bonus is the part that gets traded with actual experience behind it, rather than blind at 1:40 pm.
What should I use my Polymarket Promo Code Bonuses on?
Rhett Lowder starts for Cincinnati as who will be on the mound for St. Louis is still unknown. The MLB markets however, will be heavily impacted based on whatever happens in the afternoon. Save this decision for later. That is the whole point of the offer landing early.
If the Cardinals win comfortably at 1:40, expect their Game 2 price to get shorter. If Cincinnati takes the opener behind their own crowd, there may be value coming back the other way.
We are not going to pretend to know which. Neither should anyone else at 11 am. Watch Game 1, note where the bullpens got used, see who is out of the lineup for the second game, and let your $20 follow what you actually saw.
Polymarket is a peer-to-peer prediction market platform, not a sportsbook. We are buying and selling contracts against other traders, at prices those traders are setting between them. There is no line to beat and no house taking a cut of the number. Prices move because opinion moves, and this can take some getting used to, use Game 1 to get comfortable.
Polymarket Promo Code FAQs
What is the Polymarket promo code? The Polymarket promo code is ACTION. Enter it in the promo code field when you register a new account on the Polymarket US app, and a $10 deposit unlocks $20 in bonus funds.
Do I have to place a trade to get the $20 bonus? No. This is what separates the offer from most of its competition. Some prediction market promos require you to settle a set amount in qualifying trades before anything is credited,
18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See http://polymarket.us/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 derivatives exchange and clearing organization. Not available in AZ, IL, MA, MD, MI, MT, NV, and OH.
