Step into the batter’s box and sign up for a new account using the Polymarket promo code ACTION. Make a deposit of $10+ and get a $20 trading bonus for MLB games today, Wednesday, Aug. 19, 2026.
This isn't your average sportsbook at Polymarket, which operates a a regulated prediction market. Instead of betting on the traditional fixed odds like -110, you're betting on YES or No contracts priced from $0.01 to $0.99. Each bet settles at the full $1.00 if it wins (not if it misses), so the price you pay is the live market's read on whether it will hit or not. But you're not done – you can still hold, sell, or increase your offering while the game is still going on. Polymarket goes far beyond the traditional sportsbook, so give it a try today and get a nice welcome bonus in the process.
Get started right away, and you can make your first trade before the first pitch of tonight’s Yankees vs. Orioles matchup at 6:35 p.m. ET on Prime Video from Baltimore, Maryland. Last night, the Bronx Bombers took the first game of the series, but the O's are still one of the many AL teams alive for the final Wild Card spot. There's great action across the entire league tonight, so use your new bonus on anything like game outcomes, totals, player props, and more.
Polymarket Promo Code ACTION Offer Terms
Polymarket and prediction market apps operate in non-online sports betting states due to being a CFTC regulated exchange. This makes Polymarket promo code ACTION more accessible nationwide.
Polymarket is only withheld from 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, WA, WI, WV, and WY.
How to Redeem Polymarket Promo Code ACTION
- Tap here to install Polymarket on iOS or Android.
- Enter your name, address, phone number, and Social Security number.
- Enter the Polymarket promo code ACTION from Action Network.
- Finish registration by clearing identity verification.
- Make a $10+ deposit using an approved banking method.
- Unlock $20 in trading credits and take a position on the Tigers-Pirates MLB game tonight.
Our certified Polymarket referral code ACTION is exclusively available to new accounts, so existing users are unable to register for this bonus.
Yankees vs. Orioles Odds: Polymarket vs. Kalshi
Both of the most popular prediction markets have similarly priced markets for tonight's Yankees vs. Orioles matchup, but you'll find the best bang for your buck at Polymarket.
| Market | Polymarket | Kalshi |
|---|---|---|
| Yankees Win | 54¢ | 53% |
| Orioles Win | 47¢ | 47% |
| Reported Volume | ~$70k | ~$6.6k |
If it were up to me, I would use the Polymarket promo code ACTION to claim this bonus and get the ball rolling on my trades.
My Yankees vs. Orioles pick
Pick: Orioles to win, 47¢ on Polymarket. I can use my $20 bonus and take the outright position on Baltimore.
- Chris Bassit Loves the Home Cooking: After missing a little more than two months with a back issue, the right-hander is ready for battle tonight. Bassitt returned on Friday, tossing 5 and 1/3 innings of two-run ball in a much needed win against the Rays. Camden Yards has been much more friendly for Bassitt, who owns a 3-1 record and 3.09 ERA there, compared to 1-3 with a 7.28 ERA on the road.
- Will Warren Solid vs O's: Despite having a mixed bag of performances this season, Warren has been great against the Orioles, posting a 2-0 record and 2.25 ERA while recording 15 strikeouts across 12 innings. However, this is a much different Baltimore lineup since the last time Warren faced them back on May 12.
- Pete Alonso Looking Good vs. Warren: Although lefty bats have hit Warren harder over his career, it might be an almighty righty as the big bopper of the night for Baltimore. Over the last seven days, Pete Alonso is 9-for-20 with a double and two homers, but the good news doesn't end there. Warren throws his 4-seam fastball and sinker to right-handed bats about 72% of the time, and Alonso has hit 15 of his 28 HR on those two pitches from right-handed pitchers this season.
- Trent Grisham = Yankees' Offense: Grisham was the star of the show last night, driving in all three Yankee runs en route to the 3-1 win. It's also worth noting that Grisham has five HR over the last eight games, and he has taken tonight's opposing starter (Bassitt) deep twice in his career.
Why Sign Up With Polymarket Referral Code ACTION?
- No long-term commitment. Flip your $10 deposit into $30 worth of trading power and get started right away.
- You Keep the Vig. Prices are set by other traders, not the sportsbook. This keeps the playing field as true as possible.
If you thought this analysis helped, sign up now with the Polymarket promo code ACTION, deposit $10, and put this knowledge to the test by tradig $30 in total before the first pitch of tonight’s Yankees vs. Orioles game at 6:35 p.m. ET on Prime Video.
18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See http://polymarket.us/tos for 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.
