The Polymarket invite code COVERS unlocks a $20 bonus for new users looking to trade on Saturday's Red Sox vs Cardinals matchup. Kyle Leahy takes the mound for St. Louis as they seek their second straight series win, while Boston looks to break out of their offensive struggles. This Saturday, April 11 offer provides an excellent opportunity to explore one of the best prediction market apps available.
Polymarket Invite Code Details for $20 Baseball Bonus
The Polymarket promo code COVERS requires a $20 deposit to unlock the matching $20 trading bonus for new users. Unlike traditional sportsbooks, Polymarket operates as a prediction market where you can trade on various outcomes related to the Red Sox-Cardinals game. For example, you might trade on whether Kyle Leahy will record more than 4.5 strikeouts or if Jordan Walker extends his six-game hitting streak. If you believe Leahy will struggle and trade "No" on his strikeout total at 60 cents, you could profit 40 cents per share if he falls short. Conversely, backing Walker's hot streak at 70 cents per share would net 30 cents profit if he gets a hit.
Key terms include eligibility for new users in authorized jurisdictions, the mandatory promo code entry during registration, and typical wagering requirements before withdrawal. Bonus funds generally expire within 7-30 days if unused. The offer applies to various markets beyond baseball, including politics, entertainment, and world events. Compare this promotion with other best prediction market promos to maximize your trading opportunities.
Enjoying Covers content? Add us as a preferred source on your Google account

Use the correct Polymarket promo code for your state
| Promo Code | Eligible States |
| COVERS | All states + DC, excluding NV |
How to Claim Your Red Sox vs Cardinals Trading Bonus
Claiming your Polymarket bonus for Saturday's baseball action takes just minutes. Follow these steps to start trading on the Red Sox-Cardinals game:
- Visit Polymarket through the provided link and click "Sign Up"
- Enter invite code COVERS during registration
- Complete account verification with your email and personal information
- Make your qualifying $20 deposit using available payment methods
- Receive your $20 trading bonus automatically
- Browse baseball markets for the Red Sox vs Cardinals game
- Place your first trade on outcomes like player performance or game results
Affiliate Disclosure: Our team of experts has thoroughly researched and handpicked each product that appears on our website. We may receive compensation if you sign up through our links.
Gambling Problem? Call 1-800-GAMBLER. Hope is here. GamblingHelpLineMA.org or call (800) 327-5050 for 24/7 support (MA). Call 1-877-8HOPE-NY or text HOPENY (467369) (NY).
21+ and present in select states.Gambling Problem? Call 1-800-GAMBLER (CO, IA, KY, MI, NJ, OH, PA, IL, TN, VA, VT), 1-800-NEXT-STEP or text NEXTSTEP to 53342 (AZ), 1-888-789-7777 or visit ccpg.org/chat (CT), 1-800-9-WITH-IT (IN), 1-800-522-4700 or visit ksgamblinghelp.com (KS), 1-877-770-STOP (LA), visit www.mdgamblinghelp.org (MD), 1-800-522-4700 (WY), or visit www.1800gambler.net (WV).






