The Orioles vs. Mets prediction markets open with New York as a slight home favorite for tonight's 7 p.m. ET finale at Citi Field, the only standalone game on the ESPN MLB board.
Chris Bassitt takes the ball for Baltimore against the club he pitched for in 2022, with Robert Stock answering for New York.
New traders who enter the Polymarket promo code ACTION at signup get $50 in bonuses, which stands out among the best prediction market promos.
Orioles vs. Mets Prediction Markets: Moneyline Prices
Prices across the Orioles vs. Mets prediction markets are in cents, and each price reflects the market's read on the odds. Winning shares settle at $1.00 each, and losing shares go to zero.
| Market | Price | Shares from $60 | Payout if right | Profit |
|---|---|---|---|---|
| Orioles win | 46¢ | 130 | $130 | $70 |
| Mets win | 55¢ | 109 | $109 | $49 |
Prices are correct at the time of publishing and subject to change.
Polymarket's own chart tracks the move, with the matchup opening at a coin flip on Sept. 13 before New York drifted out to 55%.
Spread and Total Contracts
The Orioles vs. Mets prediction markets also price margin and combined scoring as separate contracts.
- Orioles +1.5 (63¢): the market gives Baltimore a 63% chance of staying inside a one-run loss or winning outright.
- Mets -1.5 (38¢): New York covers a two-run margin just 38% of the time at this price.
- Over 8.5 runs (55¢): the total leans over, with the under sitting at 46¢.
Best MLB Player Props Today
The Orioles vs. Mets prediction markets carry a full prop board, so the MLB player props today run deeper than the moneyline and the total.
Our editors trade three contracts tonight:
- Home run pick: Pete Alonso 1+ home runs at 22¢. A $100 buy converts to roughly 455 shares, each worth $1 if he connects, for a $355 profit.
- Hits pick: Francisco Lindor 1+ hits at 69¢, the lower-multiple, higher-probability shape we size up on.
- Strikeout pick: Chris Bassitt 4+ strikeouts at 60¢ against a Mets lineup he knows well. A $100 buy takes roughly 167 shares and returns $167, for a $67 profit.
Every contract on the MLB player props today board settles on that player's individual stat line rather than the final score.
What Does $60 Buy in the Orioles vs. Mets Prediction Markets?
Only $10 of that $60 is yours, and the bonus never improves the price you pay. It simply lets you take a meaningful position on a $10 outlay.
A $10 deposit buys 21 Orioles shares at 46¢ and returns $21 on a Baltimore win. That same $10, plus the $50 in bonuses, buys 130 shares and returns $130.
Holding to the final out stays optional. Prices move inning by inning, and selling a position mid-game locks in the difference. Our guide on how to bet on Polymarket walks through the order screen step by step.
How Do You Claim Polymarket Promo Code ACTION?
- Tap any Polymarket link on this page.
- Register with your email, Apple ID, or Google account.
- Enter ACTION in the referral code field during registration, because nothing adds the code afterward.
- Finish identity verification with your ID and SSN.
- Deposit at least $10 through Apple Pay, debit card, or bank transfer.
- Watch $50 in bonuses land in your balance, then trade tonight's game.
Polymarket Promo Code ACTION FAQs
What is the current promo code?ACTION unlocks the Deposit $10, Get $50 in Bonuses welcome offer for new traders on the Polymarket US app.
Does the bonus require a qualifying trade? No. The $10 deposit alone triggers the credits, win or lose on your first position.
Who is favored tonight? The Mets sit at 55% at home, with the Orioles priced at 46%.
When do these markets resolve? Moneyline and total contracts settle on the final score, while the MLB player props today settle on individual statlines.
Compare Polymarket against the other best prediction market apps before you commit a bankroll, and read our full Polymarket review for the fee structure and the wider market menu.
18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/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 exchange and clearing organization.
