Register with the Action Network-certified Polymarket promo code ACTION to trade on the battle of Chicago in MLB with $20 in bonus funds. Deposit $10 after signing up for your account to instantly activate the $20 promotional offer. Polymarket sticks out compared to other prediction market promos because no trade involving your hard-earned money is needed to trigger any site-credit.
Tap the module above to claim the $20 Polymarket promo code ACTION welcome offer today, Tuesday, Oct. 18, 2026. White Sox vs. Cubs gets underway at 8:05 p.m. ET on TBS, so get in on the action to trade on this marquee Illinois sports rivalry.
Polymarket Promo Code ACTION Sign-Up Steps
- Use this link to install the Polymarket US app on your iOS or Android mobile device.
- Type in personal identifying information, including name, address, phone number, and Social Security number.
- Insert the Polymarket promo code ACTION into the correct field.
- Complete identity verification to finish signing up.
- Make a qualifying deposit of $10+ with an approved banking method
- Unlock $20 in trading credits to trade on White Sox vs. Cubs MLB markets.
Keep in mind that the Polymarket referral code ACTION is only redeemable to new players. This prediction market promo is unavailable if you already have an existing account.
White Sox vs. Cubs Odds Preview
The White Sox vs. Cubs is one that matters more to Illinois residents this year than most. These teams don't often overlap in terms of having winning records, but both teams are comfortably over .500% entering this matchup.
What makes prediction market apps like Polymarket fun to trade on is that prices are dictated by you and your fellow peers, not the house. Prices vary when comparing Polymarket and Kalshi White Sox-Cubs game odds.
| Game 2 market | Polymarket | Kalshi |
|---|---|---|
| White Sox win | 41¢ | 39¢ |
| Cubs win | 60¢ | 62¢ |
My pick for this game is White Sox win YES (41¢). The reason I think they pull off the upset is due to the Cubs starting Kevin Gausman. The 35-year-old vet has a 6-11 record on the year and surrendered six earned runs in his last contest.
Whether or not you agree with my pick, sign up for a profile using the Polymarket promo code ACTION now to stamp your prediction in the battle of Illinois by trading White Sox vs. Cubs prediction markets.
Final Thoughts: Redeem Polymarket Referral Code ACTION Now
Don't exit this page until you register with Polymarket promo code ACTION and give the $20 welcome offer a chance to operate. Polymarket operates in 42 states, so why not reward yourself without having to put any of your hard-earned money at risk?
Action Network verifies all the MLB prediction market promos on the board daily to ensure their legitimacy. Don't doubt Polymarket referral code ACTION and the $20 in promotional funds that come your way following a $10+ deposit.
18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See http://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. Not available in AZ, IL, MA, MD, MI, MT, NV, and OH.
