Baseball fans open a full Saturday schedule on Aug. 1, and the best MLB prediction market promos hand new users a quick way to jump into the action. The slate starts in the afternoon and builds toward the marquee national broadcast: Red Sox vs. Dodgers at 9:10 p.m. ET on ESPN. Lock in one of the best MLB prediction market promos below before first pitch.
Prediction markets let you trade on real-world outcomes, from which team takes a single game to how the full MLB postseason race unfolds. Platforms like Polymarket, Kalshi, FanDuel Predicts, Novig, and ProphetX each hand new traders a welcome offer worth real value. The MLB prediction market apps below reach most states, and signup takes just a few minutes.
We ranked the five best MLB prediction market promos for Aug. 1 and compared each of their bonuses side by side. Tap any offer to claim it, then load your first trade before your MLB game of interest begins.
| Prediction Markets | MLB Prediction Market Promos | Sign-Up Link |
|---|---|---|
| Polymarket | Deposit $20, Get $50 in Bonus Funds | LABS |
| FanDuel Predicts | Make Any Trade, Get $25 Bonus | Click Here |
| Kalshi | Trade $25, Get Up to $500 Bonus | LABS |
| Novig | Spend $25, Get $50 in Novig Coins | BCLABS |
| ProphetX | Trade $10, Get $20 Bonus | LABSMAX |
Best MLB Prediction Market Promos for Aug. 1
Here’s a closer look at each of the best prediction market apps and the welcome offer that comes with every account. These MLB prediction market promos shift often, so grab the ones that match your state today.
Every promo works a little differently. Some reward your first deposit, while others pay you simply for placing a trade. Check the state availability in each table, then pick the MLB prediction market apps that fit where you live and how you trade.
1. Polymarket
The largest prediction market by trading volume is Polymarket, and their MLB markets stay liquid all season. New users who enter Polymarket promo code LABS and deposit $10 grab $20 in bonus funds, which doubles your starting balance before you place a single trade.
Polymarket operates in a long list of states and keeps a user-friendly interface, allowing you to find your preferred MLB market and trade it in seconds. Tap the link below to claim your $20 bonus.
| Polymarket Promo Code | Polymarket Referral Bonus | Polymarket States Available |
|---|---|---|
| Polymarket Promo Code LABS | 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
Millions of bettors already recognize FanDuel from its sportsbook, and the prediction arm carries that same familiar feel. You skip the code entirely here. Click through, place any trade on an Aug. 1 game, and $25 drops into your account. That single-trade trigger ranks this among the gentlest MLB prediction market promos for anyone dipping a toe in for the first time.
FanDuel keeps its map tight for now, so scan the FanDuel Predicts promo code table below before you commit. Traders in states like Texas, Florida, and California are able to jump straight to an MLB market and back a side in two quick taps.
| FanDuel Predicts Promo Code | FanDuel Predicts Welcome Offer | 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 stands apart as a CFTC-regulated exchange, which puts federal oversight behind every contract you touch. Punch in Kalshi promo code LABS, stake $25 across the Aug. 1 slate, and the platform stacks up to $500 in bonuses on top, the fattest ceiling on this page. Few MLB prediction market promos climb anywhere near that number.
Kalshi reaches beyond tonight’s Red Sox vs. Dodgers lines, too. The board lists division races, team win totals, and playoff odds, so your $25 stretches across dozens of angles. Match your state to the table below, then open a position before first pitch.
| Kalshi Promo Code | Kalshi Referral Bonus | Kalshi States Available |
|---|---|---|
| Kalshi Promo Code LABS | 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, WA, WV, WI, WY, DC |
4. Novig
Novig flips the usual setup on its head with a peer-to-peer, no-vig model. You square off against other traders instead of a house that shaves the margins. Drop in Novig promo code BCLABS, put down $25, and Novig doubles it with $50 in Novig Coins for your opening slate. That coin boost stretches your bankroll further than most MLB prediction market promos on this list.
The no-vig structure sharpens your prices on tight matchups this evening, where every cent of edge counts on a coin-flip line. Novig also lights up several states that other apps skip entirely, so check the grid below and claim the coins.
| Novig Promo Code | Novig Sign-Up Bonus | Novig States Available |
|---|---|---|
| Novig Promo Code BCLABS | 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 asks the least of your wallet to get moving. Type in ProphetX promo code LABSMAX, trade a single $10 stake, and the app matches it with a $20 bonus. This means a clean double on the smallest entry among these MLB prediction market promos.
The exchange layout hands you sharp two-way pricing on the full July 31 board, from Rangers vs. Astros down to the afternoon undercard. ProphetX also spreads across more states than any rival here, so it often becomes the fallback when other markets go quiet in your area. Grab the code below and fire off your first trade.
| ProphetX Promo Code | ProphetX Welcome Offer | ProphetX States Available |
|---|---|---|
| ProphetX Promo Code LABSMAX | 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, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY |
