Step up to the plate and sign up for a new account using the Polymarket promo code ACTION from Action Network. All you need to do is make a deposit of $10 or more to receive the $20 bonus today, Tuesday, Aug. 18, 2026, which pushes your starting balance to $30 and gives you real capital to trade with right out of the gate.
Polymarket is a regulated prediction market rather than a traditional sportsbook, so instead of betting into a fixed line you buy a Yes or No contract priced anywhere from 1 to 99 cents. Each one settles at a full $1.00 when the outcome hits and nothing when it misses, which means the price you pay is really the market's live read on how likely that result is. You can hold a position all the way to settlement or sell it early to bank a profit, giving you far more control than a standard ticket.
Get signed up with Polymarket promo code ACTION immediately to allow more than enough time to get your trades in for tonight's interleague White Sox vs. Cubs Crosstown Classic, live at 8:05 p.m. ET on TBS from Wrigley Field in Chicago, Illinois. Whether you want to back the Cubs at home, take a shot on the White Sox, or trade the run total, every angle of the rivalry is priced out in front of you before first pitch.
Polymarket Promo Code ACTION Offer Terms
Polymarket is one of theCFTC regulated prediction market apps which operate in non-online sports betting states. This additional availability in states like California and Texas (where sports betting is prohibited) is the biggest pro in favor of Polymarket promo code ACTION.
Redeem the Polymarket welcome bonus and set up your new account now in AK, AL, AR, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IN, KS, KY, LA, ME, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, and WY.
How to Sign Up With Polymarket Promo Code ACTION
- Tap this link to download Polymarket on your iOS or Android.
- Type in information like your name, address, phone number, and Social Security number.
- Insert the Action Network Polymarket promo code ACTION.
- Complete registration by clearing identity verification.
- Complete a $10+ deposit by using an available banking method.
- Pocket $20 in trading credits and make a trade on the White Sox-Cubs MLB game tonight.
Only new accounts are able to redeem our verified Polymarket referral code ACTION, meaning existing users are unable to sign up.
White Sox vs. Cubs Odds: Polymarket vs. Kalshi
The two most popular prediction markets align in labeling the Cubs as the favorites, but Polymarket is your best option tonight.
| Game 2 market | Polymarket | Kalshi |
|---|---|---|
| White Sox win | 41¢ | 39¢ |
| Cubs win | 60¢ | 62¢ |
In my opinion, using Polymarket promo code ACTION is the preferred method to claim your $20 bonus tonight.
My White Sox vs. Cubs pick
Pick: White Sox to win, 61¢ on Polymarket. Use your $20 bonus to cover this position outright.
- Kevin Gausman Makes Wrigley Debut for Cubs: At the deadline, the Cubs got one of the most prized possessions in Gausman to bolster their rotation for the postseason run. However, it’s worth noting that Gausman allowed a season-high seven runs at Wrigley Field back on June 19 en route to a 16-2 loss for the Blue Jays.
- Bullpen Day for the White Sox: Bryan Hudson will serve as the White Sox opener before giving way to Erick Fedde for “bulk relief.” In what form that bulk appears remains to be seen, but Fedde has only gone 5+ innings in two of his last nine appearances. As a side note, the White Sox bullpen has allowed the fifth-most HR (9) since the beginning of August.
- PCA = MVP?: According to the odds – yes, Pete Crow-Armstrong is betting odds’ favorite (-115) slightly over Shohei Ohtani (-105). PCA tacked on to his 2026 MVP campaign with two homers last night against their crosstown rivals, including the 10th-inning walkoff for the home plate dance party.
- Miguel Vargas Rolling: Vargas has hit safely in seven of his last eight games, which includes four HRs over the last six. Surprisingly, Vargas has never faced Gausman over the course of their careers, but this sets up a great individual matchup for the national TV audience tonight.
I’m taking a shot on the underdog White Sox tonight. Hudson should be able to neutralize the Cubs’ lefty bats in the early going, and Fedde has been surprisingly better against left-handed bats.
With Dansby Swanson out of the Cubs lineup, that’s one less righty bat that can do some damage. The White Sox still have a solid trio of Munetaki Murakami, Colson Montgomery, and the aforementioned Vargas; look for them to even up the series tonight.
Why Register With Polymarket Referral Code ACTION Today?
- Small commitment. $10 turns into $30 of total trading power (your $10 deposit + $20 in bonus funds = $30 value).
- No sportsbook vig. Other traders set the prices at Polymarket, not the house. This is all designed to keep the trading as fair and honest as possible.
If you agree with my pick and want to tail it on your first trade, go ahead and sign up now with the Polymarket promo code ACTION, deposit $10, and trade $20 in bonuses on tonight’s White Sox-Cubs game at 8:05 p.m. ET on TBS.
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, OH.
