The Polymarket referral code ACTION gives new users a $20 trading bonus after a $10 deposit — and Sunday's Twins vs. Mariners series finale at 4:10 p.m. ET on FS1 is the ideal spot to put it to work. Deposit $10, enter ACTION at registration, and $20 in trading bonus funds posts to your account instantly — before the Twins and Mariners throw the first pitch at T-Mobile Park in Seattle.
The bonus lands before you've placed a single trade. No minimum trade size. No winning position required. Just a $10 deposit with the Polymarket referral code ACTION and the $20 is yours — one of the most frictionless new-user offers in sports betting alternatives available for tonight's slate, including Twins vs. Mariners.
Polymarket Referral Code ACTION — Offer Details
| Category | Details |
|---|---|
| Polymarket Referral Code | ACTION |
| New User Offer | Deposit $10, Get $20 Trading Bonus |
| Deposit Method | Bank transfer, debit card, or Apple Pay |
| Bonus Delivery | Automatic — posts when deposit clears |
| Trade Required to Unlock? | No |
| Game Spotlight | Twins vs. Mariners — Saturday, August 1, 2026 |
| First Pitch | 4:10 p.m. ET, FS1, T-Mobile Park |
| Terms | 18+ · Not available in AZ, IL, MA, MD, MI, MT, NJ, NV, or OH |
The Polymarket referral code ACTION and Polymarket promo code ACTION unlock the same offer — entering either during registration activates the Deposit $10, Get $20 welcome bonus. Polymarket is a CFTC-regulated peer-to-peer prediction market exchange where contract prices reflect live crowd-sourced probability rather than a house-adjusted line. Among all prediction market promos available for Sunday's MLB slate, this is the most accessible new-user entry point on the board.
How to Claim the Polymarket Referral Code ACTION
- Tap any Polymarket link on this page or use the Polymarket referral code ACTION link directly.
- Download the Polymarket app on iOS or Android or register on the desktop site.
- Enter ACTION in the referral code field before completing registration.
- Complete the required identity-verification step.
- Deposit a minimum of $10 via bank transfer, debit card, or Apple Pay.
- Your $20 bonus posts automatically once the deposit clears — no trade required.
- Deploy your bonus on Twins vs. Mariners or any eligible market on the platform.
Twins vs. Mariners — Live Polymarket Contract Prices (4:10 p.m. ET, FS1, T-Mobile Park)
Seattle plays host in a series finale that carries genuine second-half divisional weight for both clubs. The Mariners hold home-field advantage at T-Mobile Park and the market reflects that structural edge heading into first pitch. Check the latest MLB odds alongside these Polymarket contract prices before first pitch — when the two markets diverge on a close series finale, that gap reveals where the value sits.
| Outcome | Polymarket Price | Implied Probability |
|---|---|---|
| Mariners Win | $0.58 | 58% |
| Twins Win | $0.42 | 42% |
| Under 8 Runs | $0.54 | 54% |
| Over 8 Runs | $0.46 | 46% |
Verify on Polymarket before trading. Prices update in real time.
Action Network's pick: Mariners to win at $0.58. Seattle holds the home edge in a series finale with real divisional stakes. A user purchasing 34 contracts at $0.58 spends approximately $19.72 — deploying the full $20 bonus in a single position. A Mariners win returns $34, roughly $14.28 in gross profit before fees, with the welcome bonus already in the account. The Under 8 runs at $0.54 is the natural complement — T-Mobile Park plays as one of the more pitcher-friendly environments in the AL and a tight series finale sets up well for a low-scoring outcome.
Polymarket Referral Code ACTION — FAQ
What is the Polymarket referral code ACTION?
The Polymarket referral code ACTION activates a Deposit $10, Get $20 Trading Bonus for new users. Enter it during registration, deposit $10, and the $20 posts to your account automatically.
Is the Polymarket referral code the same as the Polymarket promo code?
Yes — the Polymarket referral code ACTION and the Polymarket promo code ACTION are interchangeable. Entering either at registration unlocks the same Deposit $10, Get $20 welcome offer.
Which states is the Polymarket referral code ACTION available in?
Most U.S. states are eligible. The offer is currently not available in AZ, IL, MA, MD, MI, MT, NJ, NV, or OH. Verify your state before depositing.
Do I need to make a trade to unlock the bonus?
No. The $20 bonus posts the moment your $10 qualifying deposit clears — no trade required to unlock it.
Is Polymarket regulated?
Yes. Polymarket is a CFTC-regulated designated contract market. It serves as MLB's official prediction market partner, meaning MLB baseball markets run on official league data with consistent liquidity throughout the season.
Can I use the $20 bonus on markets beyond tonight's MLB game?
Yes. Once the deposit clears, the bonus applies to any eligible Polymarket market — NFL, soccer, politics, and entertainment contracts included.
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.
