By claiming Polymarket promo code STIFFS, new customers can get a $20 bonus after making an initial trade of just $10. Click here to get in on the action.
This welcome offer provides extra capital for Tuesday’s MLB action, allowing you to instantly take a position on premier matchups like the Philadelphia Phillies visiting the St. Louis Cardinals or the Seattle Mariners facing the New York Yankees. Furthermore, these bonus credits are completely flexible, meaning they can be deployed for this particular slate or applied toward any MLB game this week to maximize your trading portfolio on Polymarket.
Polymarket Promo Code STIFFS Delivers $20 Bonus
| Polymarket Promo Code | STIFFS |
|---|---|
| New User Offer | Trade $10, Get $20 Bonus |
| Terms and Conditions | 18+ and Present in the US |
| Bonus Last Verified On | August 11, 2026 |
This exclusive promotion is strictly reserved for new Polymarket customers. By creating your account and making an initial trade of just $10, you will instantly unlock a $20 bonus. This extra padding arrives perfectly in time for the current MLB slate, giving you immediate funds to utilize on the prediction markets.
To qualify for this offer, users must be 18+ and physically located in an eligible Polymarket state. Once your new account is verified and your first $10 trade is placed, the $20 bonus will be ready to deploy, allowing you to dive straight into the baseball forecasting action without risking as much of your own capital.
MLB Monday Night Preview
| Matchup | Probability |
|---|---|
| KC @ LAD | KC 30% / LAD 71% |
| PHI @ STL | PHI 61% / STL 40% |
| SEA @ NYY | SEA 46% / NYY 55% |
When evaluating these markets, Los Angeles is the clearly superior team on paper, justifying their steep projection. At the plate, the Dodgers boast a .261 batting average and .767 OPS. On the mound, their pitching staff holds a strong 3.73 ERA and 1.16 WHIP, a rotation recently bolstered by the massive trade deadline acquisition of Tarik Skubal to join Shohei Ohtani and Yoshinobu Yamamoto. The Royals, meanwhile, have struggled to contain opposing offenses with a 4.85 ERA and 1.43 WHIP.
In the Phillies-Cardinals matchup, Philadelphia (-164) remains the favored position. The Phillies recently added three-time batting champion Luis Arráez to their lineup, and their rotation depth has shined with prospect Andrew Painter showcasing excellent form—recently taking a no-hitter deep into the sixth inning. Philadelphia also features a tighter 1.31 WHIP, limiting baserunners more effectively than the Cardinals’ 1.34 WHIP. Additionally, the Mariners take on the Yankees at a slight disadvantage, operating without key infielder J.P. Crawford due to left wrist inflammation.
How to Get Started With Polymarket Promo Code STIFFS
Claiming this offer is a straightforward process. Follow these simple steps to ensure your account is set up and your promotion is activated before you enter any MLB markets:
- Create an Account: Click on any of the links on this page. and register for a new account by providing standard personal information.
- Enter the Promo Code: When prompted during registration, be sure to enter the promo code STIFFS.
- Make a Cash Deposit: Using any of the secure payment methods, make a cash deposit of $10 or more.
- Place Your First Trade: Once your initial deposit clears, finalize the process by placing your first trade of at least $10 to fully activate the offer.
