Claim $1,285 in Prediction Market Promos for Wednesday's MLB Postseason Games

Joshua Howe - Content Manager at Covers.com
Joshua Howe • Content Manager 5+ years betting experience
Updated: Oct 7, 2026 , 09:20 AM ET • 3 min read

Claim the best predictions promos for MLB ALDS and NLDS action on Wednesday, October 7. Compare eight predictions market promos and sign up today.

Claim prediction market welcome bonuses by signing up today!
Photo By - Claim prediction market welcome bonuses by signing up today!

Fans looking to join MLB playoff action can take advantage of top prediction market promos available today. Each platform below offers a welcome bonus for new users who sign up and make a qualifying deposit or trade. Compare the best prediction market apps and pick the offer that fits your style.

Our best prediction market promos

Top 7 Prediction Markets Welcome Offers Claim Now
Kalshi $60 Trading Bonus Claim $60 with code 'COVERS60'
Polymarket Deposit $10, Get $25 Bonus Claim $25 with code "COVERS"
ProphetX Trade $50, Earn $75 Claim $75 with code "COVERS"
Novig Deposit $10, Get $50 Claim $50 with code "COVERS"
OG.com Trade $25, Get $25 Bonus Claim $25
Underdog 50% Deposit Match up to $1,000 Claim $1,000 with code "COVERS"
Crypto.com Unlock $50 Bonus Claim $50

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Compare the Best Predictions Promos for MLB ALDS and NLDS Action

The MLB ALDS and NLDS continue on Wednesday, October 7, giving new users plenty of markets to explore across the best prediction market sites. Below, you will find the Kalshi promo code, Polymarket promo code, ProphetX promo code, Novig promo code, OG promo code, Underdog fantasy promo code, Crypto.com promo code, and DraftKings Predictions promo code offers, along with terms and sign-up steps for each.

Use the Kalshi promo code, Polymarket promo code, ProphetX promo code, Novig promo code, OG promo code, Underdog fantasy promo code, Crypto.com promo code, and DraftKings Predictions promo code links to claim each offer.


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: Trade $25, Get $60

Enter the Kalshi promo code COVERS60 to claim the Trade $25, Get $60 sign-up offer available to eligible new customers. Kalshi lets users trade contracts on sporting events, politics, breaking news, economics, and pop culture.

Key terms and conditions:

  • The offer is available in all states except Nevada and Washington.
  • You must be physically present in an eligible location.
  • Eligible new customers can use either the promo code COVERS60 or an eligible referral link, but not both.
  • The offer is limited to one per Kalshi account.
  • You must provide a government-issued ID or passport, along with a selfie of you holding that ID.
  • Make an initial deposit of at least $10 and transact at least $25 on Kalshi's Predictions product.
  • After you transact at least $25, the bonus is credited regardless of whether the qualifying transactions win or lose.
  • Bonus credit cannot initially be withdrawn, must be used on Kalshi's Predictions product, and expires seven days after it is granted.

How to claim the Kalshi offer:

  1. Sign up and verify. Select "Sign Up" and enter the Kalshi promo code COVERS60 during registration. Provide your date of birth, phone number, and location, then verify your Social Security number and a form of ID, such as a driver's license or passport photo with an accompanying selfie.
  2. Deposit. In your Kalshi wallet, click "Deposit Cash" and select your preferred payment method. You must deposit at least $10.
  3. Trade. Explore the available markets and transact at least $25 on Kalshi's Predictions product, ideally in a high-volume market with clear rules and near-term settlement.
  4. Withdraw earnings. After using any awarded bonus credit, you can withdraw eligible cash proceeds, but not the original bonus credit. Go to the "Transfers" section, choose "Withdraw Funds," select a linked payment method, and enter the amount.

No. 2: Polymarket

 Polymarket Logo 

Get $25 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: Deposit $10, Get $25 Trading Bonus

Enter the Polymarket promo code COVERS in most U.S. states to claim the platform's $25 welcome offer. Unlike traditional sportsbook promos, the Polymarket sign-up bonus requires depositing $10 to unlock the reward.

Key terms and conditions:

  • You can claim the offer in all states except Nevada.
  • You must be physically located in an eligible location.
  • You must sign up with the Polymarket bonus code COVERS to trigger the offer.
  • You must provide proof of ID when registering, including a photo of a driver's license or passport along with a selfie holding that ID.
  • Make an initial deposit of $10.
  • You no longer need an invitation to create a Polymarket account, as the previous U.S. waitlist has been removed for eligible users.
  • A promo code like COVERS unlocks the new-user welcome offer, while referral links are part of Polymarket's separate refer-a-friend program.
  • Enter the code during registration. Once your account has been created, you generally cannot apply a promo code retroactively.
  • The same promotion is available to eligible iOS and Android users who register through a qualifying promotional campaign and satisfy the offer's terms.
  • Once you meet the 1x playthrough requirement of the bonus, any profit you make from your trades is yours and can be withdrawn as cash.

How to claim the Polymarket offer:

  1. Register through a link on this page. Open the trading app using one of the verified links, click "Sign Up," and input the Polymarket invite code COVERS. You will receive a verification email containing a code to enter on the platform. You can also register with a crypto wallet, such as MetaMask. Have your date of birth, phone number, email address, and current address ready.
  2. Make a qualifying deposit. Deposit $10 or more into your account. Polymarket deals strictly in USD, so you can use a debit card, bank transfer (ACH), Apple Pay or crypto options to fund your account.
  3. Place your first trade. Complete a real-money trade on any eligible market to claim the sign-up bonus.
  4. Access your bonus funds. If you enter the code COVERS at registration and the requirements are met, your $25 trading bonus will be credited and ready to use on your next trades.

No. 3: ProphetX

 ProphetX Logo 

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: Trade $50, Earn $75

Register with the ProphetX promo code COVERS to get a $75 trading bonus. Make an initial deposit of at least $50, then browse ProphetX's markets and real-world event contracts. You must trade at least $50 in these contracts to unlock the $75 reward, regardless of the outcome of the trade.

Key terms and conditions:

  • You can claim the offer in all states plus DC, excluding Nevada.
  • You must be physically present in an eligible location.
  • You must sign up with the ProphetX bonus code COVERS to trigger the offer.
  • You must provide a government ID or passport, along with a selfie of you holding that ID.
  • Make an initial deposit of $50 or more and trade at least $50 in event contracts.
  • Once you complete $50 in trades, the $75 bonus is credited regardless of whether those trades win or lose.
  • The ProphetX promo code offer is ongoing.

How to claim the ProphetX offer:

  1. Create your ProphetX account. Launch the ProphetX app (available on the App Store and Google Play Store) or the desktop site, click "Register," and provide your full name, date of birth, mailing address, Social Security number, and phone number. You must also verify your identity with a photo of your driver's license or passport. ProphetX will text you a one-time PIN to activate your account. Register with the promo code COVERS to qualify.
  2. Deposit. Navigate to the banking section, choose a payment option, enter the amount, and confirm your transaction. The minimum deposit is $50.
  3. Make your first $50 trade. Browse the available markets and start placing trades.
  4. Receive $75 in bonus funds. Once eligible, use your bonus funds to keep trading sports prediction markets.
  5. Withdraw winnings. Once all conditions have been met, select "Withdraw," choose from the available vendors, and enter the amount. Claims are processed within five business days.

No. 4: Novig

Deposit $10, Get $25

COVERS

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: Deposit $10, Get $50

The Novig promo code COVERS qualifies new users for a Deposit $10, Get $50 welcome offer. Novig is a peer-to-peer prediction market regulated by the Commodity Futures Trading Commission (CFTC) and operates via Ludlow Exchange, LLC.

The bonus arrives as Ten (10) Trade Credits of $5.00 each. You must use the bonus on contracts priced at least $0.01 and no more than $0.60 per contract, and the Trade Credits expire after 30 days.

Key terms and conditions:

  • You must use the Covers-exclusive Novig promo code COVERS during registration and be at least 21 years old to qualify.
  • A qualifying deposit and trade are required to activate the offer. You must fund your account and complete the required trade after registration.
  • Make a minimum deposit of $10 and a minimum trade of $5 to activate the offer and receive Ten (10) Trade Credits of $5.00 each.
  • Novig Coins are non-withdrawable and hold no monetary value.
  • The offer is available nationwide.
  • There is no end date for the offer, and it is currently ongoing.

How to claim the Novig offer:

  1. Register an account. Click the link on this page and go to the App Store or Google Play Store to download the Novig app.
  2. Create and verify your account. Select "Sign Up" and fill in the required fields, including your full name, home address, email, and Social Security number.
  3. Enter the Novig promo code COVERS during registration to qualify for the welcome bonus.
  4. Deposit $10 and place a trade of at least $5 to receive $50 in Trade Credits, then start exploring markets.

No. 5: OG.com

OG.com Logo

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: Trade $25, Get $25

New users can enter the OG promo code COVERS during registration to claim up to $25 in trading bonuses.

Key terms and conditions:

  • The offer is available in all U.S. states except New York and Arizona. Users in Illinois, Massachusetts, Maryland, Michigan, New Jersey, Nevada, and Ohio can claim the bonus but cannot use it for sports trading.
  • You must be physically located in an eligible OG state to claim the promotion.
  • A minimum deposit of $10 is required.
  • A trade of at least $25 is required to qualify for the full bonus. The minimum qualifying trade is $10.
  • The qualifying trade must settle within seven days of account verification.
  • Only trades with a probability below 80% qualify, and trades made using reward funds are not eligible.
  • The offer is available to all new users.

How to claim the OG offer:

  1. Register and enter the OG promo code COVERS. Visit OG.com, click "Sign Up," and register with an email address. Verify your email address and mobile phone number, create a passcode, and complete identity verification with your full name, date of birth, address, and the last four digits of your Social Security number. Enter the code COVERS during registration.
  2. Deposit funds. Fund your account with a debit card or another available payment method, such as Apple Pay, Google Pay, ACH bank transfer, or wire transfer. A minimum deposit of $10 is required.
  3. Place a qualifying trade. Choose a short-duration market that will settle within seven days of account verification, with a probability below 80%. A long-term market, such as an NFL futures contract, may not settle within the promotional window. Use cash rather than reward funds for the trade.
  4. Withdraw earnings. Open your portfolio, select "Withdraw," link a bank account through Plaid, and submit an ACH withdrawal from your eligible cash balance. OG displays a $1 minimum withdrawal, with limits of up to $100,000 per day and $500,000 per month. Most withdrawals are processed within 24 hours.

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 Fantasy Promo Code: 50% Deposit Match up to $1,000

The Underdog promo code COVERS gives eligible new customers a 50% first-deposit match up to $1,000.

Key terms and conditions:

  • The 50% first-deposit match is available to eligible new Underdog customers using COVERS.
  • You must deposit at least $10 to qualify.
  • The match is capped at $1,000, meaning you need to deposit $2,000 to receive the maximum amount.
  • Underdog can take up to 72 hours after your qualifying deposit resolves to issue the promotional funds.
  • COVERS can be used with eligible Prediction Picks and Combo entries, subject to their respective rules and availability.
  • You must complete 1x the value of your deposit plus bonus before the promotional balance fully qualifies.
  • You have 14 days after the bonus is issued to complete the required playthrough. Any unused promotional balance can be forfeited after that period.
  • Eligible winnings generated during the playthrough period may be withdrawable, but promotional funds themselves are subject to the offer requirements.
  • If Underdog gives you a "Choose Your Offer" option, you can select only one available promotion.
  • The promotion shown during registration ultimately determines the bonus and requirements attached to your account.

For example, if you deposit $100 with COVERS, your 50% match is $50, and your combined balance for playthrough purposes is $150. You must generate $150 in qualifying entry fees within 14 days.

How to claim the Underdog offer:

  1. Register. Follow the Covers Underdog link and begin creating a new account.
  2. Enter the Underdog promo code COVERS in the promo-code field. Confirm that the registration screen shows a 50% first-deposit match up to $1,000.
  3. Complete identity verification. Provide the requested personal and location information. Prediction Picks may involve a second onboarding step, and users can be asked questions concerning employment, income, and trading experience before Predict access is activated.
  4. Deposit at least $10. A $2,000 deposit is needed to receive the maximum $1,000 match.
  5. Receive the bonus entries. The promotion can take up to 72 hours after the deposit resolves to appear in the account, and it is issued as bonus entries, not withdrawable cash.
  6. Complete the playthrough. Use the qualifying balance on eligible entries and complete 1x the deposit plus bonus within 14 days. Bonus funds cannot be applied to entries with a payout multiplier below 2x.

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: Play $5, Get $50 in Bonus Entries

No Crypto.com promo code is needed to claim this offer, as it applies automatically through the eligible sign-up link. Deposit a minimum of $10 and receive a bonus match to your stake of up to $50. The bonus comes in the form of CRO, the native cryptocurrency of Crypto.com.

Key terms and conditions:

  • You can activate the offer in most states plus DC, except for AR, AZ, CT, IL, LA, MA, MD, MI, NV, NY, and OH.
  • No Crypto.com referral code is required to access the offer.
  • Registering requires entering personal information, such as your legal name and email address, and providing proof of ID.
  • Make a minimum initial deposit of at least $10, and Crypto.com will match your stake in a bonus of up to $50.
  • The offer is ongoing and has no expiry date.

How to claim the Crypto.com offer:

  1. Register. Download the Crypto.com app from the App Store for iOS or Google Play for Android and open it to begin registration through the eligible sign-up link. After creating your account, complete the required KYC verification by confirming your phone number and providing a valid government-issued ID, such as a passport or driver's license.
  2. Deposit funds. Deposit using fiat or cryptocurrency. Crypto.com supports USD payments using ACH, bank transfer, Visa, Mastercard, Apple Pay, or Google Pay. Crypto options include Bitcoin, Litecoin, and Ethereum. The minimum deposit required to activate the bonus is $10.
  3. Start trading. Navigate to the "Sports" tab within the Crypto.com predictions marketplace, browse the available markets, and place your prediction by buying or selling a contract.
  4. Withdraw winnings. After the event concludes, you will receive a set payment for each profitable contract you own. Head to your account, choose the relevant product, click "Transfer," select "Withdraw Funds," choose a linked payment method, and enter the amount.

Whether you are following the MLB ALDS and NLDS on Wednesday, October 7, or simply browsing the best predictions promos, each offer above gives new users a way to get started. Review the terms for each platform, confirm that you are in an eligible location, and sign up through the links provided to claim your welcome offer.


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.

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Joshua Howe - Covers
Content Manager

Joshua Howe is a content manager at Covers, helping make smarter sports bettors since 2021. An experienced writer and editor, he has developed a sterling reputation within the iGaming space as a meticulous and thoughtful content creator, consistently focused on editorial leadership and strategy, engaging diverse audiences, providing authoritative industry analyses, and crafting compelling stories across multiple mediums. He has reviewed over 30 sportsbooks and has been placing his own wagers for four years and counting.

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