Use our Polymarket promo code ACTION to collect $20 in bonus straight off the bat. Get this home run of an offer before Seattle travels to the Bronx for the first of three against New York on Tuesday, Aug. 11.
First pitch goes off at 7:05 p.m. ET on TBS, the MLB marquee matchup of the night. Bryan Woo faces Ryan Weathers in a game the market reads as lopsided, where Polymarket’s $20 worth of bonuses can come up clutch. Here is how to use the Polymarket promo code ACTION and where to think about putting it.
What does the Polymarket Promo code ACTION Offer?
| Polymarket Promo Offer | Deposit $10, Get $20 Trading Bonus |
| Polymarket Promo Code | ACTION |
| Eligibility | New users, 18+, identity verification required |
| Regulator | CFTC-regulated Designated Contract Market |
| Primetime Game | Mariners @ Yankees, 7:05 p.m. ET, TBS, Yankee Stadium |
Which Mariners-Yankees Trades Make Sense with your Polymarket Bonus?
Polymarket has been all over the Mariners vs Yankees markets, traders from all over the US coming together to set the latest and most informed prices and contracts out there. The markets for the Yankees and Mariners markets currently look something like :
| Matchup | Mariners (56-63) @ Yankees (66-52) |
| Date | Tuesday, Aug. 11, 2026 |
| First pitch | 7:05 p.m. ET |
| TV | TBS |
| Venue | Yankee Stadium, Bronx, N.Y. |
| Polymarket Price | SEA – $0.43 / NYY – $0.58 |
Note: Prices are dynamic and subject to change prior to first pitch.
Trading on Polymarket currently prices the Seattle Mariners as 43¢ underdogs (a 43% implied win probability) against the host New York Yankees at 58¢.
Our experts like the look of Seattle's $0.43 holding substantial value over the current consensus, especially for those playing with their $20 Polymarket Promo Code bonuses
Seattle hands the ball to Bryan Woo (8-8, 4.31 ERA), whose high-spin, elevated four-seam fastball creates a challenging matchup for a Yankees lineup that frequently struggles with heat. With New York starter Ryan Weathers (5-7, 3.79 ERA) facing a disciplined Seattle squad and the Yankees' bullpen coming off heavy weekend usage,
Putting the $20 Polymarket welcome bonus toward the Mariners underdog market allows you to maximize your promotional funds. Your $20 bonus on SEA order $0.43 buys roughly 47 outcome contracts. If Seattle wins, each contract settles at $1.00, yielding a total payout of $45.19 and a net profit of $25.19.
Taking a swing on the Mariners as underdogs is an ideal strategy when trading with bonus funds. You are risking only bonuses that came from a $10 deposit, not even a wager. A win brings an excellent payout, whilst a loss leaves your $10 in real cash still in your balance.
How Can You Use the Polymarket Promo Code ACTION?
- Use our Polymarket sign up link to go to the prediction market app and start a new account.
- Enter Polymarket promo code ACTION in the promo field during registration.
- Complete identity verification with a government ID and a live selfie.
- Deposit at least $10 by debit card, Apple Pay, bank transfer or crypto.
- Collect the $20 bonus automatically. No qualifying trade is even needed.
The Polymarket promo code offer can set you up with $30 in your balance before the Mariners vs Yankees. A healthy set of funds to try your hand in some of the MLB markets and prices ahead of tonight's 7:05 pm ET matchup.
Does the Polymarket Promo Code ACTION Offer Expire?
The offer runs as a rolling predictions market promo, not a one-week window. The Polymarket referral code stays live for new accounts through the end of 2026.
The bonus funds earned from using the Polymarket promo code ACTION expire after one week of them being credited.
Tuesday's market closes at first pitch, though. Register, verify and deposit before 7:05 p.m. ET to hold a position on the TBS game rather than the late West Coast slate.
Polymarket Promo Code ACTION FAQs
Do the promo, referral and invite codes differ? No. The Polymarket invite code, the Polymarket referral code and the promo code all resolve to the same $20 offer. Enter ACTION once.
Does Polymarket still require an invitation? No. The platform dropped its U.S. waitlist in spring 2026.
Does the qualifying trade need to win? No. Polymarket credits the $20 on settlement either way.
Which states lack access? The Polymarket referral code excludes AZ, IL, MA, MD, MI, MT, NJ, NV and OH. Minnesota banned access effective Aug. 1, 2026, and Tennessee and Connecticut have issued restrictions. Availability varies — the app confirms at signup.
How do cents prices work? A contract priced at 60¢ implies a 60% chance. Winners settle at $1, losers at $0 per contract purchased.
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.
