Wednesday's MLB Wild Card Series slate gives new sign-ups plenty of reasons to explore prediction market promos before first pitch. New users can download one of the best prediction market apps and browse the latest prediction market promos in just a few minutes. Signing up ahead of the four potential elimination games makes it easy to claim a welcome offer before the first pitch.
Our best prediction market promos
| Top 8 Prediction Markets | Welcome Offers | Claim Now |
|---|---|---|
 |
$60 Trading Bonus | Claim $60 with code 'COVERS60' |
 |
Deposit $10, Get $50 Bonus | Claim $50 with code "COVERS" |
 |
Trade $50, Earn $75 | Claim $75 with code "COVERS" |
 |
Deposit $10, Get $25 | Claim $25 with code "COVERS" |
 |
Trade $25, Get $25 Bonus | Claim $25 |
 |
50% Deposit Match up to $1,000 | Claim $1,000 with code "COVERS" |
 |
Unlock $50 Bonus | Claim $50 |
MLB Wild Card Series Predictions Market Promos
Wednesday's four winner-take-all matchups, including Philadelphia at Atlanta and Boston at New York, give new users plenty of markets to explore across the platforms below. Each site listed offers its own welcome structure, and bettors comparing the best prediction market sites can review the terms for every offer before choosing one of the best prediction market promos available this week.
No. 1: Kalshi
Trade $25, Get $60 Bonus
*Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at http://kalshi.com/tc/55.. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.
Kalshi Promo Code
New customers can enter the Kalshi promo code COVERS60 to claim a Trade $25, Get $60 welcome offer ahead of Wednesday's MLB Wild Card Series slate. Kalshi lets users trade contracts on sports, politics, economics and more, and the code unlocks bonus credit once a qualifying transaction is placed. The offer sits among the best prediction market sites for new users looking to get started this postseason.
The Kalshi promo comes with several terms and conditions:
- Available in all states except Nevada and Washington.
- Users must be physically located in an eligible state.
- New customers can use the promo code or an eligible referral link, but not both.
- Limited to one offer per Kalshi account.
- A government-issued ID or passport, along with a selfie, is required for verification.
- An initial deposit of at least $10 is required, along with at least $25 in transactions on Kalshi's Predictions product.
- The $60 bonus is credited once $25 in qualifying transactions is completed, regardless of outcome.
- Bonus credit cannot be withdrawn immediately, must be used on the Predictions product, and expires seven days after being granted.
How to claim the Kalshi promo code:
- Sign up on Kalshi and enter promo code COVERS60 during registration.
- Verify your identity with a government-issued ID and provide personal details, including date of birth and Social Security number.
- Deposit at least $10 into your account using an available payment method.
- Transact at least $25 on Kalshi's Predictions product to unlock the bonus.
- Withdraw eligible cash proceeds through the Transfers section once requirements are met.
No. 2: Polymarket
Get $50 With Code COVERS
18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See https://polymarket.com/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 exchange and clearing organization.
Polymarket Promo Code
Enter the Polymarket promo code COVERS during registration to claim a Deposit $10, Get $50 trading bonus. The offer is available in most U.S. states and requires a minimum deposit to unlock the reward before browsing event contracts tied to sports and other categories.
Key terms include:
- Available in all states except Nevada.
- Users must be physically located in an eligible location.
- The Polymarket bonus code COVERS must be entered at sign-up.
- Proof of ID, including a photo of a driver's license or passport with an accompanying selfie, is required.
- An initial deposit of $10 is required to trigger the offer.
How to claim the Polymarket promo code:
- Visit the Polymarket US app and select Sign Up, entering promo code COVERS.
- Register using a Google or Apple ID, then complete identity verification.
- Deposit at least $10 using a debit card, ACH transfer, or wire transfer.
- Select an event contract and confirm a trade to begin using the account.
- Withdraw eligible funds once they clear, using the same funding source as the original deposit.
No. 3: ProphetX
Earn $75 With Code COVERS
Federally regulated. Live nationwide. Trading sports event contracts involves substantial risk of loss and is not appropriate for all investors. Past results are not necessarily indicative of future results. You should consider whether trading is appropriate for you in light of your financial circumstances. ProphetX is a CFTC-regulated designated contract market. Full risk disclosure available at prophetx.co/risk.
ProphetX Promo Code
Register with the ProphetX promo code COVERS to claim a Trade $50, Earn $75 welcome offer. Users can browse ProphetX's markets covering sports, politics and culture before completing the qualifying trade needed to unlock the bonus.
Terms and conditions include:
- Available in all states plus Washington, D.C., excluding Nevada.
- Users must be physically present in an eligible location.
- Sign up with bonus code COVERS to trigger the offer.
- A government ID or passport, plus a selfie, is required for verification.
- An initial deposit of at least $50 is required, along with at least $50 in trades.
- The $75 bonus is credited once the trade requirement is met, regardless of outcome.
How to claim the ProphetX promo code:
- Create a ProphetX account through the app or desktop site and enter promo code COVERS.
- Provide personal information, including a Social Security number and phone number, and verify your identity.
- Deposit at least $50 into your account.
- Place at least $50 in event contract trades to qualify.
- Withdraw winnings once the offer requirements are satisfied, typically processed within five business days.
No. 4: Novig
Restrictions and eligibility requirements apply. The offer is available to new users only, subject to the terms and conditions specified by Novig. 21+ only. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Novig products are not available in all jurisdictions.
Novig Promo Code
The current Novig promo code offer is Deposit $10, Get $25, using code COVERS at sign-up. The bonus arrives as five Trade Credits worth $5 each, usable on contracts priced between $0.01 and $0.60.
Terms and conditions include:
- Users must be at least 21 years old and enter code COVERS during registration.
- A minimum deposit of $10 and a minimum trade of $5 are required to activate the offer.
- Trade Credits expire 30 days after being issued.
- The offer is available nationwide and is currently ongoing.
How to claim the Novig promo code:
- Download the Novig app from the App Store or Google Play Store.
- Select Sign Up and provide your full name, address, email, and Social Security number.
- Enter Novig promo code COVERS during registration.
- Deposit at least $10 and place a trade of at least $5 to receive the Trade Credits.
No. 5: OG.com
Trade $25 & Get $25
Campaign period: Extended. The promotion expires seven days after account verification, and only events settled within this seven-day window are eligible. Each qualifying trade must be worth at least $10 and have a probability below 80%. Trades at or above 80% probability will not count. Trades are counted only after they have settled, and trades placed using rewards are not eligible.
OG Promo Code
New users can enter the OG promo code COVERS during registration to claim up to $25 in trading bonuses through a Trade $25, Get $25 offer.
Terms and conditions include:
- Available in all states except New York and Arizona; residents of Illinois, Massachusetts, Maryland, Michigan, New Jersey, Nevada, and Ohio can claim the bonus but cannot use it for sports trading.
- Users must be physically located in an eligible state.
- A minimum deposit of $10 is required.
- A trade of at least $25 is required for the full bonus, and it must settle within seven days of account verification.
- Only trades with a probability below 80 percent qualify.
How to claim the OG promo code:
- Visit OG.com, select Sign Up, and enter promo code COVERS.
- Verify your email and phone number, then complete identity verification with personal details.
- Deposit funds using a debit card or another available payment method.
- Place a qualifying trade of at least $25 on a market that settles within seven days.
- Withdraw eligible cash through the portfolio section using a linked bank account.
No. 6: Underdog
50% Deposit Match up to $1,000
Code: COVERS
Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog Fantasy operates. Terms apply. Offer not valid in MD, MI, NJ, NY, OH, and PA. Concerned with your play? Call 1-800-MY-RESET or 1-800-GAMBLER or visit www.ncpgambling.org; AZ: 1-800-NEXT-STEP (1-800-639-8783) or text NEXT-STEP to 53342; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369).
Underdog Promo Code
The Underdog promo code COVERS unlocks a 50 percent deposit match up to $1,000 for eligible new customers.
Terms and conditions include:
- A minimum deposit of $10 is required to qualify.
- The match is capped at $1,000, requiring a $2,000 deposit to receive the maximum amount.
- Bonus funds can take up to 72 hours to appear after the qualifying deposit resolves.
- Users must complete 1x the value of the deposit plus bonus in qualifying entries within 14 days.
- Unqualified promotional balances can be forfeited after the 14-day turnover period.
- Only one available promotion can be selected if a "Choose Your Offer" option is presented.
How to claim the Underdog promo code:
- Register a new account and enter promo code COVERS in the promo code field.
- Complete identity verification, including personal and location information.
- Deposit at least $10 to trigger the 50 percent match.
- Wait up to 72 hours for the bonus entries to appear in your account.
- Complete the required playthrough within 14 days using eligible entries.
No. 7: Crypto.com
Spend $5, Get $200
Restrictions and eligibility requirements apply. The offer is available to new users only, subject to the terms and conditions specified by Crypto.com. 18+ only. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Crypto.com products are not available in all jurisdictions.
Crypto.com Promo Code
The current offer is Play $5, Get $50 in Bonus Entries, and it applies automatically through the eligible sign-up link, so no Crypto.com promo code is necessary. Depositing a minimum of $10 unlocks a stake match of up to $50, paid in CRO.
Terms and conditions include:
- Available in most states plus Washington, D.C., excluding Arkansas, Arizona, Connecticut, Illinois, Louisiana, Massachusetts, Maryland, Michigan, Nevada, New York, and Ohio.
- No referral code is required to access the offer.
- Registration requires personal information and proof of ID.
- A minimum initial deposit of $10 is required to receive the matched bonus.
- The offer is ongoing and has no expiration date.
How to claim the Crypto.com offer:
- Download the Crypto.com app from the App Store or Google Play Store and register through the eligible link.
- Complete KYC verification by confirming your phone number and providing a government-issued ID.
- Deposit at least $10 using a supported fiat or cryptocurrency payment method.
- Navigate to the Sports tab and place a prediction on an available market.
- Withdraw winnings through the Transfer section once the event concludes.
Each of these platforms offers a distinct way to explore prediction market promos ahead of the MLB Wild Card Series on Wednesday, September 30. Reviewing the terms for every offer helps new users choose the option that fits before placing a first trade. Comparing the best prediction market sites now makes it easier to get started before the next round of MLB action begins.
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.
