Today's MLB calendar runs from early afternoon straight through the West Coast night. A rematch of last October's NLCS gives MLB prediction market apps their busiest board of the weekend when the Brewers and Dodgers play at 7:00 p.m. ET on FOX from Dodger Stadium.
Six prediction markets dominate the space heading into today: Polymarket, FanDuel Predicts, Kalshi, Novig, DraftKings Predictions, and ProphetX. Every one of them posts event contracts on Brewers vs. Dodgers, the full Saturday slate, and futures markets such as MLB MVP.
First-time traders are eligible to claim all these MLB prediction market promos six at once, with offers starting at a $20 trading bonus, and climb to $500 in bonus credit. Grab the MLB prediction market apps you want from the table below to trade this weekend.
| MLB Prediction Markets | MLB Prediction Market Apps | Sign-Up Link |
|---|---|---|
| Polymarket | Deposit $10, Get $20 Trading Bonus | ACTION |
| FanDuel Predicts | Sign Up & Unlock Your Offer | Click Here |
| Kalshi | Trade $25, Get Up to $500 Bonus | ACTION |
| Novig | Spend $25, Get $50 in Novig Coins | ACTION |
| DraftKings Predictions | Trade $5, Get $150 in Predictions Dollars | Click Here |
| ProphetX | Trade $10, Get $20 Bonus | TANBONUS |
Best MLB Prediction Market Apps for Brewers vs. Dodgers Today
Because all six MLB prediction market apps price the same slate, the separation shows up elsewhere. This includes what you pay in fees, whether the app is live where you live, how much size sits on either side of a contract, and how smoothly it handles trading once the game starts.
Below is where each of the best prediction market apps separates itself, along with the code that releases the current welcome offer.
There's no required order here. Open two or three accounts, line up the Brewers contract side by side, and take the number you like best.
1. Polymarket
No exchange in the category moves more volume than Polymarket, and its sports section grew in a hurry once the platform came back to U.S. traders under CFTC oversight late in 2025. Moneyline, total runs, and player-level contracts on Brewers vs. Dodgers all stay live into the ninth, with prices repricing the moment lineup cards drop.
Enter the Polymarket promo codeACTION and a $10 deposit returns a $20 trading bonus. Polymarket also allows combination trades running as long as 32 legs, so a Dodgers position and a Freddy Peralta strikeout market can sit inside a single ticket.
| Polymarket Promo Code | Polymarket Referral Bonus | Polymarket States Available |
|---|---|---|
| Polymarket Promo Code ACTION | Deposit $10, Get $20 in Bonus Funds | AL, AK, AR, CA, CO, CT, DE, FL, GA, HI, ID, IN, IA, KS, KY, LA, ME, MN, MS, MO, NE, NH, NM, NJ, NY, NC, ND, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY, DC |
2. FanDuel Predicts
FanDuel lifted the look and feel of its sportsbook and dropped it onto an event contract exchange, which means anyone with an existing FanDuel login needs roughly zero adjustment time.
The baseball board sticks to the headline markets instead of chasing every prop, and that suits traders who want a single clean position on tonight's game rather than a stacked card.
The FanDuel Predicts promo code triggers at registration, and availability sits at 18 states while the rollout continues state by state. Of all the MLB prediction market apps listed here, this is the gentlest introduction for someone opening a first exchange account.
| FanDuel Predicts Promo Code | FanDuel Predicts Sign-Up Bonus | FanDuel Predicts States Available |
|---|---|---|
| FanDuel Predicts Promo Code (Click Here) | Sign Up & Unlock Your Offer | AK, AL, CA, DE, FL, GA, HI, ID, MN, ND, NE, NM, OK, RI, SC, SD, TX, UT |
3. Kalshi
Kalshi holds status as a CFTC-regulated Designated Contract Market, with Kalshi Klear registered as the clearinghouse behind it (the heaviest regulatory file of anyone in this group).
Alongside a same-game parlay tool, the app carries markets on baseball, elections, economic data, and weather.
Redeem the Kalshi promo code ACTION and a $25 trade opens the door to as much as $500 in bonus credit, the biggest headline figure on this page. Robinhood's prediction section is routed through Kalshi's exchange, so a Brewers vs. Dodgers price on one platform tracks the other.
| Kalshi Promo Code | Kalshi Sign-Up Bonus | Kalshi States Available |
|---|---|---|
| Kalshi Promo Code ACTION | Trade $25, Get Up to $500 Bonus | AL, AK, AR, CA, CO, CT, DE, FL, GA, HI, ID, IN, IA, KS, KY, LA, ME, MN, MS, MO, NE, NH, NM, NJ, NY, NC, ND, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WV, WI, WY, DC |
4. Novig
Novig was designed around sports from day one instead of adding them later, and the company cleared CFTC approval in June 2026. Zero commission is the selling point which matters most to traders who enter and exit the same market several times on MLB prediction market apps.
The Novig promo code ACTION turns a $25 purchase into $50 in Novig Coins. Coverage reaches a large number of states and Washington, D.C..
Additionally, Novig plans to keep adding markets through the closing stretch of the season.
| Novig Promo Code | Novig Sign-Up Bonus | Novig States Available |
|---|---|---|
| Novig Promo Code ACTION | Spend $25, Get $50 in Novig Coins | AK, AR, FL, GA, HI, IL, IN, IA, KS, KY, ME, MA, MN, MO, NE, NH, NC, ND, OH, OK, OR, SC, SD, TX, VT, VA, DC, WI, WY |
5. DraftKings Predictions
The DraftKings promo code covers more ground than any other MLB prediction market apps in this roundup by operating in 48 states. Traders shut out by the Kalshi or Polymarket maps should make this the first stop.
A single $5 trade releases $150 in Predictions Dollars, the cheapest buy-in attached to any of today's MLB prediction market promos.
The layout borrows from the main DraftKings app, and contracts are displayed in a style that regular sportsbook users can read without translating anything.
| DraftKings Predictions Promo Code | DraftKings Predictions Sign-Up Bonus | DraftKings Predictions States Available |
|---|---|---|
| DraftKings Predictions Promo Code (Click Here) | Trade $5, Get $150 in Predictions Dollars | AL, AK, AZ, AR, CA, CO, CT, DE, FL, GA, HI, ID, IL, IN, IA, KS, KY, LA, MD, MA, MI, MN, MS, MO, MT, NE, NV, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY |
6. ProphetX
ProphetX cleared CFTC approval in June 2026 and now serves 49 states, which gives it the widest map of any sports-first exchange on the market. Winning parlays carry a 0% charge, and slips are shown in American odds, trimming the learning curve for anyone stepping over from a sportsbook.
Our verified ProphetX promo code TANBONUS returns a $20 bonus on a qualifying $10 trade that settles, win or lose. Since pricing comes from other traders rather than a house line, the Brewers number on ProphetX often beats the MLB odds posted elsewhere.
| ProphetX Promo Code | ProphetX Welcome Offer | ProphetX States Available |
|---|---|---|
| ProphetX Promo Code TANBONUS | Trade $10, Get $20 Bonus | AL, AK, AZ, AR, CA, CO, CT, DE, FL, GA, HI, ID, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MN, MS, MO, MT, NE, NV, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY |
How to Sign Up and Claim the Best MLB Prediction Market Promos
Registration runs about five minutes on any of the six best MLB prediction market apps:
- Use one of the sign-up links above so the offer attaches to your new account.
- Type the promo code for that exchange into the registration form.
- Confirm your identity with your legal name, home address, birthday, and the final four of your Social Security number.
- Add funds by debit card or bank transfer, or with USDC if you're on Polymarket.
- Complete the qualifying trade to release the bonus, then open the MLB tab.
