A lot of sign-up offers are complicated to claim but the Polymarket promo codeACTION is surprisingly straightforward. Fund your account with $10 and $50 in trading credit shows up without requiring your first trade to win. The simplicity makes the Polymarket promo code ACTION one of the more useful welcome bonuses for Brewers vs. Cubs at 7:40 p.m. ET on TBS from Tuesday's MLB slate.
The timing gives you a good game to trade, too. Milwaukee carried a 7.5-game NL Central lead over Chicago into this week's series, while both clubs remain firmly in the postseason picture. Tuesday's MLB matchup also gives us an interesting pitching contrast between Robert Gasser and Matthew Boyd. New users can register with Polymarket referral code ACTION, deposit $10, and put the $50 bonus to use one any available Polymarket MLB contracts.

Polymarket Promo Code ACTION Offer Details
| Promo Code | Bonus | Legal States |
|---|---|---|
| ACTION | Deposit $10, Get a $50 Trading Bonus | 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, WI, WV, WY |
Polymarket sits alongside Kalshi and Novig on the short list of prediction markets taking action on MLB nationwide, and this deposit bonus is currently one of the more generous prediction market promos available today. Claim your bonus from one of the best prediction market apps active in North America, and join the action on any Brewers vs. Cubs contract now.
How Polymarket Contracts Actually Work
Polymarket doesn't post MLB odds like a sportsbook. It sells contracts instead. Say the Brewers are trading at 50 cents. You pay 50 cents, and if Milwaukee wins you get paid a dollar. If the Brewers lose, the contract expires at zero and the 50 cents is gone.
You also do not have to hold every contract until the final out. If you buy Milwaukee at 50 cents and the Brewers jump ahead early, you can sell the position at the new market price rather than waiting for the game to settle.
Brewers vs. Cubs: Market Analysis
Robert Gasser (4-5, 4.59 ERA) gets the ball for Milwaukee against Matthew Boyd (8-3, 3.99 ERA) for Chicago. MLB lists both left-handers as Tuesday's probable starters.
Gasser's season ERA is not particularly impressive, but his most recent outing was encouraging. He entered in relief against the Mets after Dustin May was knocked out of the game on the first pitch and gave Milwaukee 5 1/3 innings of one-run baseball with six strikeouts.
Boyd is coming off a strong outing of his own. He allowed one earned run on three hits over six innings against Arizona last Wednesday. That start was important because August had otherwise been rough: Boyd allowed 18 earned runs and nine home runs over 31 innings during the month.
The bigger picture favors Milwaukee. The Brewers entered this series leading the NL Central at 85-52, compared with Chicago at 77-60, and Milwaukee's pitching staff has been one of the best in baseball. Chicago counters with an offense that leads the National League in runs and OPS, so this is hardly a mismatch despite the gap in the standings.
| Market | Polymarket Price | Implied Probability |
|---|---|---|
| Brewers to win | 50¢ | 50% |
| Cubs to win | 51¢ | 51% |
| Cubs +1.5 | 62¢ | 62% |
| Over 9.5 | 50¢ | 50% |
Brewers vs. Cubs Prediction
Here is my Brewers vs. Cubs prediction for today: Brewers to win (50%).
This is less about Gasser having a clear advantage over Boyd — he doesn't — and more about getting the better team at an even-money price.
Milwaukee has spent most of the season separating itself from the NL Central and entered the series with a +177 run differential. The Brewers also came into Chicago having won five consecutive series. At 50 cents, Polymarket is essentially saying those advantages are completely canceled out by Wrigley Field and Tuesday's pitching matchup.
Boyd's last outing was excellent, but one strong start does not erase a rocky August. Gasser has been inconsistent himself, but Milwaukee's bullpen and overall pitching depth give the Brewers more ways to survive if neither starter lasts deep into the game. Chicago absolutely has the lineup to punish Gasser. Pete Crow-Armstrong just had a three-homer game over the weekend, and the Cubs' offense has been one of the strongest in the National League all season. That is why I would not chase Milwaukee much past the current number.
How to Claim the Polymarket Promo Code for Brewers vs. Cubs
- Click the Polymarket promo code ACTIONlink to open the Polymarket registration page with the code applied.
- Enter your name, email, date of birth and address, then verify your identity.
- Deposit at least $10 using an available funding method.
- Your $50 trading bonus lands in your account after the deposit clears.
- Open the Brewers vs. Cubs market and buy contracts on the side you want.
Polymarket Offer Terms and Conditions
18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. Seehttp://polymarket.us/tosfor 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, and WA.













































