Polymarket MLB Wild Card Promo Code CHECK: Grab a $50 Bonus for White Sox vs Astros

Polymarket MLB Wild Card Promo Code CHECK: Grab a $50 Bonus for White Sox vs Astros

The American League Wild Card Series gets underway late this afternoon as the Chicago White Sox square off against the Houston Astros in Game 1 at Daikin Park in Houston (5:00 PM ET on Peacock & NBCSN).

If you're looking for a fresh alternative to standard online sportsbooks, Polymarket provides a peer-to-peer prediction exchange where contract prices represent direct market probabilities between 1¢ and 99¢.

By registering with Polymarket referral code CHECK, new traders receive an automated $50 trading bonus after making a $10 deposit and completing their first trade on today's postseason slate. CLICK HERE to sign up with Polymarket and claim your bonus today!

Check out our simple registration steps below and get yourself ready for the game today!

How to Claim the Polymarket $50 Promo Code

Follow these quick steps to claim your welcome bonus before first pitch in Houston:

Step 1: CLICK HERE or download the official Polymarket U.S. app

Step 2: Tap “I have a referral code” and enter CHECK

Step 3: Complete signup using your Apple or Google login

Step 4: Add a payment method and deposit at least $10

Step 5: Make your first qualifying trade - your $50 trading bonus is issued automatically (Bonus funds are non‑withdrawable, but profits from trades are yours.)

Polymarket Probability Prices: White Sox at Astros (Game 1)

(Prices update live on the Polymarket order book. Winning shares settle at 100¢ / $1.00)

Moneyline (Outright Win Probability)

• Houston Astros: 54¢ (54% Implied Probability)
• Chicago White Sox: 47¢ (47% Implied Probability)

Run Line Spread

• Chicago White Sox +1.5 Runs: 64¢ (64% Implied Probability)
• Houston Astros −1.5 Runs: 37¢ (37% Implied Probability)

Total Game Runs

• Under 8.5 Total Runs: 53¢ (53% Implied Probability)
• Over 8.5 Total Runs: 48¢ (48% Implied Probability)

Key Trading Highlights for White Sox vs Astros

• Balanced Moneyline Board (Astros 54¢ / White Sox 47¢): Unlike heavily slanted postseason matchups, Houston enters Game 1 as a modest 54% favorite at home. Buying 100 shares of Astros YES at 54¢ costs $54, paying out $100 ($46 profit) if Houston takes Game 1.
• High Probability Cover (White Sox +1.5 at 64¢): Chicago's run line contract at +1.5 holds a 64% market probability. Trading Chicago +1.5 yields full settlement if the White Sox win outright or lose by a single run.
• Low-Scoring Pitching Duel Potential (Under 8.5 at 53¢): Early October postseason baseball often features tight pitching control. Market traders currently favor the Under 8.5 at 53¢ (53% likelihood).

Polymarket FAQs for White Sox vs Astros

What is the best Polymarket promo code for the MLB Wild Card Series?

The top welcome offer is promo code CHECK. Entering CHECK when creating your account unlocks an automatic $50 trading bonus after you make an initial deposit of $10 and place your first qualifying trade on the White Sox vs. Astros market.

How do share prices work for White Sox vs Astros on Polymarket?

All contracts trade on a scale between 1¢ and 99¢, directly reflecting real-time market probability. For example, if Houston’s moneyline contract trades at 54¢, the market projects a 54% likelihood of an Astros victory. If Houston wins, every "YES" share settles at 100¢ ($1.00), yielding a 46¢ profit per share.

Can I trade out of my position during the game?

Yes! Polymarket allows continuous live trading throughout the game. If you buy Chicago White Sox shares before first pitch and they take an early multi-run lead, driving their share price higher, you can sell your contracts back to the order book to lock in cash profits before the final out.

How do I deposit funds to trade today's MLB postseason games?

You can fund your account instantly using Apple Pay, bank transfer (ACH), debit cards, wire transfers, or supported crypto transfers. A minimum deposit of $10 satisfies the requirement to claim your $50 bonus with promo code CHECK.

DISCLAIMER

18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading involves high risk and may result in loss of your entire investment. See 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