The best rivalry in the National League gets another chapter tonight, and you can put a price on every piece of it. The NL West–leading Los Angeles Dodgers head to Philadelphia to face the Phillies at 6:40 p.m. ET at Citizens Bank Park, and regulated MLB prediction markets apps are already quoting live probabilities on the winner, the run total and just about every star in the batter's box.
MLB Prediction market apps have quietly become one of the most popular ways to follow a game like this. Instead of the fixed American odds you see at a traditional sportsbook, platforms such as Kalshi, Polymarket and ProphetX let you buy and sell contracts where the price reflects the market's estimate of how likely an outcome is. A
Enter a position before first pitch and sell out mid-game as the number moves. Below is how to trade Dodgers vs. Phillies, which apps are worth using and the full slate of games on the board today, Tuesday, July 21, 2026.
| MLB Prediction Market Apps | MLB Prediction Market Promos | Sign-Up Link |
|---|---|---|
| Polymarket | Deposit $20, Get $50 in Bonus Funds | ACTION |
| FanDuel Predicts | Make Any Trade, Get $25 Bonus | Click Here |
| Kalshi | Trade $25, Get Up to a $500 Bonus | ACTION |
| Novig | Spend $25, Get $50 in Novig Coins | ACTION |
| ProphetX | Trade $10, Get $20 Bonus | TANBONUS |
Best MLB Prediction Market Apps for Dodgers vs. Phillies
Several regulated event exchanges run MLB markets today, and most of them hand new users a sign-up incentive to get started. Prediction market promos change frequently, so always confirm the live terms and your state's eligibility before you deposit.
Also note that the Underdog app launched their own prediction market exchange last weekend, giving you another option to utilize.
1. Polymarket
Our Action Network Polymarket promo code ACTION delivers the heftiest headline number of the group and the widest menu of markets to spend it on. Register and fund your account with at least $20 to immediately unlock $50 in bonus credit.
From there, attack the Dodgers vs. Phillies moneyline, run totals, player contracts, or any of the app's deeper novelty markets. There's no shortage of ways to put the bonus to work on one of the best MLB prediction market apps.
| Polymarket Promo Code | Polymarket Referral Bonus | Polymarket States Available |
|---|---|---|
| Polymarket Promo Code ACTION | Deposit $20, Get $50 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 Predicts keeps the path to its bonus about as short as it gets. No FanDuel Predicts welcome offer is required during sign-up. Just register through the sign-up link and place a single qualifying trade.
Do that and $25 in Predicts bonus credit is yours to deploy on the night's MLB markets. The familiar FanDuel look and feel makes it an easy landing spot if you're coming over from the sportsbook side.
| FanDuel Predicts Promo Code | FanDuel Predicts Sign-Up Bonus | FanDuel Predicts States Available |
|---|---|---|
| FanDuel Predicts Promo Code (Click Here) | Make Any Trade, Get $25 Bonus | AK, AL, CA, DE, FL, GA, HI, ID, MN, ND, NE, NM, OK, RI, SC, SD, TX, UT |
3. Kalshi
Kalshi remains the most recognizable exchange in the category, and it's one of the top MLB prediction market apps I point a first-timer toward for Tuesday's game.
Create your account with the Kalshi promo code ACTION, then put down $25 in trades across the MLB card (that can be a single position on Dodgers-Phillies or spread across a few games). Clear the $25 threshold and up to $500 in bonus credit lands in your account, ready to fire on any contract you like.
| Kalshi Promo Code | Kalshi Sign-Up Bonus | Kalshi States Available |
|---|---|---|
| Kalshi Promo Code ACTION | Trade $25, Get Up to a $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, WA, WV, WI, WY, DC |
4. Novig
Novig runs on a sweepstakes framework rather than a cash exchange, which makes it the low-pressure option on this list of MLB prediction market apps. Sign up with the Novig promo code ACTION and spend $25 on the platform to trigger $50 in Novig Coins.
Those coins power the free-to-play side of the app, letting you make predictions on Tuesday's slate without staking real money. This a friendly on-ramp if you're still learning how prediction market contracts settle.
| 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. ProphetX
ProphetX is the pick amongst MLB prediction market apps for traders who want a true peer-to-peer, exchange-style setup. Now live nationwide outside of Nevada, it lets you take positions against other users rather than a house line.
Enter the ProphetX promo code ACTION at sign-up, complete a qualifying trade of at least $10, and $20 in bonus funds unlocks for use on eligible markets. This including everything on the Dodgers vs. Phillies board this evening.
| 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 |
Tuesday's MLB Slate (July 21, 2026)
Fifteen games fill the board to trade on with MLB prediction market apps, headlined by the Dodgers vs. Phillies showdown in Philadelphia. All times shown below are Eastern Time:
- Minnesota Twins at Cleveland Guardians — 6:40 p.m.
- Los Angeles Dodgers at Philadelphia Phillies — 6:40 p.m.
- Pittsburgh Pirates at New York Yankees — 7:05 p.m.
- Tampa Bay Rays at Toronto Blue Jays — 7:07 p.m.
- Baltimore Orioles at Boston Red Sox — 7:10 p.m.
- San Diego Padres at Atlanta Braves — 7:15 p.m.
- San Francisco Giants at Kansas City Royals — 7:40 p.m.
- New York Mets at Milwaukee Brewers — 7:40 p.m.
- Detroit Tigers at Chicago Cubs — 8:05 p.m.
- Chicago White Sox at Texas Rangers — 8:05 p.m.
- Miami Marlins at Houston Astros — 8:10 p.m.
- Washington Nationals at Colorado Rockies — 8:40 p.m.
- St. Louis Cardinals at Los Angeles Angels — 9:38 p.m.
- Athletics at Arizona Diamondbacks — 9:40 p.m.
- Cincinnati Reds at Seattle Mariners — 9:40 p.m.
