The Polymarket promo codeACTION gets you $20 in trading credit with a $10 deposit for any eligible sports trades today. New users can claim it ahead of Sunday's Reds vs. Cubs matchup at Wrigley Field.
First pitch is 7:20 p.m. ET on NBC and Peacock. Register through the Polymarket promo code ACTION module below, fund the account with $10, and the $20 bonus from one of the best prediction market promos gives you extra funds to use before Cincinnati and Chicago get going tonight. That leaves plenty of time to make your picks ahead of the nationally televised MLB game.
Polymarket Promo Code ACTION Offer Details
| Promo Code | Bonus | Legal States |
|---|---|---|
| ACTION | Deposit $10, Get a $20 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 |
How Do Polymarket Contracts Work?
Polymarket runs on contracts, not traditional bet slips. Each outcome generally trades somewhere between 1 and 99 cents and settles at $1 if it happens or $0 if it does not, so the contract price doubles as the market's implied probability. A 44-cent contract, for example, represents roughly a 44% chance of that outcome occurring.
Traders on both sides influence the price on Polymarket rather than a sportsbook simply posting both sides of a traditional moneyline. That is one of the structural differences drawing users to prediction markets for baseball. You can also sell a position before the game settles if the available market price moves in your favor or you want to reduce your exposure.
The Polymarket promo code ACTION offer itself is straightforward. Deposit $10 and receive $20 in trading credit to use across eligible markets. At a hypothetical 44-cent contract price, $20 would buy roughly 45 shares.
Reds vs. Cubs Preview
| Matchup | Date | First Pitch | Venue | TV |
|---|---|---|---|---|
| Reds at Cubs | Sunday, Aug. 30, 2026 | 7:20 p.m. ET | Wrigley Field | NBC/Peacock |
The Cubs have been the better team across the full season, entering this series at 76-58 compared to Cincinnati's 63-71 record. Chicago also owns one of the better offenses in baseball, giving the home side a clear advantage when comparing the two rosters from top to bottom.
Sunday's starting-pitching matchup makes the game considerably more interesting.
Cincinnati is scheduled to start Chase Burns, who enters 14-3 with a 2.77 ERA and 164 strikeouts. Chicago counters with Shota Imanaga, who is 8-9 with a 3.78 ERA and 144 strikeouts.
That gives Cincinnati a legitimate advantage on the mound even though Chicago has been the much stronger team over the course of the season.
Reds vs. Cubs MLB Odds and Prediction
Check out the latest Polymarket MLB odds available for Sunday's Reds vs. Cubs matchup. Polymarket is one of the leading prediction market apps, and the moneyline market is already live ahead of the 7:20 p.m. ET first pitch.
| Outcome | Polymarket Price | Implied Probability |
|---|---|---|
| Reds to win | 47¢ | 47% |
| Cubs to win | 54¢ | 54% |
Reds vs. Cubs Prediction: Reds to win (47¢)
I still prefer Cincinnati at this price, primarily because of Chase Burns. The Reds have been the inferior team across the full season, but this is a one-game market, and Burns gives them a legitimate starting-pitching advantage. He enters Sunday at 14-3 with a 2.77 ERA and 10.6 strikeouts per nine innings, while Chicago is scheduled to counter with Shota Imanaga.
At 47 cents, the market is giving Cincinnati a 47% chance to win. That is much closer to a coin flip than the clubs' overall records would suggest, but Burns is exactly why the gap should narrow.
Chicago still deserves to be favored. The Cubs are 76-58 compared to Cincinnati's 63-71 record, have the stronger lineup and get home-field advantage at Wrigley. But paying 54 cents for Chicago versus 47 cents for Cincinnati leaves me more interested in backing the better starting pitcher on the underdog side.
If you would rather play the game at a sportsbook, scan Sunday's MLB betting promos and compare the eventual Reds moneyline against the Polymarket price before getting involved in the sports betting market.
How to Claim the Polymarket Promo Code
- Click Polymarket promo code ACTION to open Polymarket registration with the code applied.
- Enter your name, email, date of birth and address, then complete identity verification.
- Deposit at least $10 using an eligible payment method.
- Your $20 trading bonus arrives once the qualifying deposit clears.
- Open the Reds vs. Cubs market and take a position before the 7:20 p.m. ET first pitch.
Polymarket 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.
