Orioles vs Mets Prediction Market Odds, September 15, 2026
| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
Orioles | -1 — | O 10.5 — | 0%0% | — |
Mets | +1 — | U 10.5 — | 100%100% | 100% Kalshi |
| Spread | Total | Moneyline | Best ML | |
|---|---|---|---|---|
Baltimore Orioles | -1 — | O 10.5 — | 0%0% | — |
New York Mets | +1 — | U 10.5 — | 100%100% | 100% Kalshi |
Baltimore has the better record and the worse price. The Orioles (73-78) come into Citi Field four games clear of the Mets (69-81) in the standings and still trade as the underdog for the middle game of this three-game set, with New York at 55c on Kalshi on the evening of September 14. The Mets took the opener 2-1 and can clinch the series on Tuesday. First pitch is 7:10 PM ET, and the board carries roughly $8.3K in lifetime volume across Kalshi and Polymarket.
The Orioles vs Mets middle game is a record-against-price mismatch. Baltimore arrives at 73-78, four games better than New York's 69-81, and is still the underdog on both venues. The Mets took the opener 2-1 on September 14 and can close out the series with a win here. First pitch is 7:10 PM ET at Citi Field, a time confirmed twice over: the Kalshi game ticker encodes it as KXMLBGAME-26SEP151910BALNYM, and the ESPN scoreboard lists the same 7:10 PM ET start. Coverage is on MASN and SNY.
Orioles vs Mets Market Context
Kalshi had the Mets at 55c and the Orioles at 46c late on September 14, an implied 55% for New York across the cent of overround the two legs carry. Polymarket posted 54c and 46c on the same outcomes, so the two venues agree on the number. That agreement is worth less than it looks. Polymarket has taken $23.64 of lifetime volume on each moneyline leg, an identical and negligible figure, while Kalshi has handled $1.8K on the Mets and $909 on the Orioles. Kalshi is the liquid book on this game and the price to work from. The Polymarket quote is effectively untraded rather than an independent read, so the near-perfect match between the two is not confirmation of anything.
What movement there is sits on Baltimore's side of the ticket. The Orioles opened the captured window at 48c on Kalshi and drifted to 46c by the afternoon of September 14, holding there through the final snapshot at 10:25 PM ET. The Mets leg held 55c across almost the entire span with one lone print at 54c. That is roughly 24 hours of captures, so it is a quiet board rather than a repricing, and it lines up with the sportsbook: DraftKings has New York at -132 with a total of 8.
Neither club has anything left to play for. Baltimore has 11 games remaining and New York 12, and both are comfortably under .500. The Mets are 34-41 at home, have scored 643 runs (21st in the majors) and hit .238 as a team (23rd). The Orioles are 37-39 on the road and have actually outscored them, 672 runs and 12th in the majors, on a worse .234 team average. Run prevention is a coin flip: 4.18 team ERA for New York against 4.20 for Baltimore. The clearest separator is the bullpen, where the Orioles have converted 42 saves (tied 9th) to the Mets' 29 (tied 27th).
ESPN lists Sean Manaea (5-7, 4.79) as the probable starter for New York as of September 14, with Shane Baz (6-15, 4.05) listed for Baltimore. Baz's win-loss line reads far worse than his pitching has been, and a 4.05 ERA carried on a 6-15 record is the single best argument that 46c is light on the Orioles. Pete Alonso is the bat to price around for Baltimore, leading the club at .268 with 35 home runs and 100 RBI. New York answers with Juan Soto (25 home runs), Bo Bichette (73 RBI) and Carson Benge (.273).
Orioles vs Mets Run Line and Total
The run line is priced tight in both directions and matched to the cent across venues. Mets -1.5 sits at 37c and Orioles -1.5 at 34c, identical on Kalshi and Polymarket. Step out to -2.5 and New York is 27.5c against 26c for Baltimore. Read together, those rungs say the market expects a close, low-margin game rather than a blowout either way, which is the correct read on two teams separated by 0.02 of team ERA.
The total is where the real money is. Over 9.5 runs trades at 35.5c on about $1.4K of lifetime volume, the second-busiest line on the board, and it ticked from 36c to 35c on Kalshi during the evening of September 14. Over 8.5 is 47c and Over 7.5 is 54c, which brackets the DraftKings number of 8 almost exactly. The busiest line on the entire page is not the moneyline at all: Kalshi's "run in the 1st inning" prop sits at 50c on $2.1K of lifetime volume, a genuine coin flip that has drawn more money than either side of the game winner. Polymarket also carries a small three-way market on the score after five innings, with the Mets at 47c, the Orioles at 39c and a tie at 16c.
When the Orioles vs Mets Market Resolves
The moneyline resolves to the team that wins the game at Citi Field on September 15, 2026, scheduled for 7:10 PM ET. The run line and the run totals settle on the official final score, including any extra innings. Kalshi and Polymarket both settle once the game is official and the result is final, normally within hours of the last out. A postponement moves settlement to the completed makeup game, and a suspended game settles on the official score once the contest is resumed and completed under league rules.
Key Orioles vs Mets Catalysts
- Baz's run support: a 4.05 ERA on a 6-15 record is the strongest case that 46c is short on Baltimore.
- Bullpen edge: the Orioles have converted 42 saves to the Mets' 29, which matters most in a game the run line says stays close.
- Alonso against Manaea: Baltimore's 35-homer, 100-RBI bat faces a listed starter carrying a 4.79 ERA.
- Liquidity is one-sided: Kalshi holds nearly all of the board's volume while Polymarket shows $23.64 lifetime on each moneyline leg.
- The total drew the money: Over 9.5 at 35.5c and the first-inning run prop at 50c have more behind them than either team's price.
Related Orioles vs Mets Markets
The series opener on September 14 went to New York 2-1 and set up the clinch spot here. Full season markets for both clubs sit on the Baltimore Orioles and New York Mets team hubs, and every game priced across Kalshi and Polymarket for the day is on the MLB hub.
Resolution Criteria
The moneyline resolves to the team that wins the game at Citi Field on September 15, 2026, scheduled for 7:10 PM ET, with each winning contract paying $1 per share and the losing side settling at $0. The run line (-1.5 and -2.5) and the run totals settle on the official final score including extra innings, and the first five inning markets settle on the score after five completed innings. Kalshi and Polymarket both settle once the game is official and final, normally within hours of the last out. If the game is postponed, settlement moves to the completed makeup game; if it is suspended, it settles on the official score once the contest is resumed and completed under league rules.
Key Factors
- Shane Baz listed as Baltimore's probable starter, a 4.05 ERA carried on a 6-15 record
- Bullpen gap: Orioles 42 saves (tied 9th) against the Mets' 29 (tied 27th)
- Pete Alonso (.268, 35 HR, 100 RBI) against a listed Mets starter with a 4.79 ERA
- Kalshi holds nearly all board volume; Polymarket shows $23.64 lifetime on each moneyline leg
- Baltimore drifted from 48c to 46c on Kalshi over roughly 24 hours ending the night of September 14
- New York leads the three-game set 1-0 after a 2-1 opener and can clinch with a win
What are the current Orioles vs Mets odds?
As of the evening of September 14, Kalshi priced the New York Mets at 55c and the Baltimore Orioles at 46c for the September 15 game. Polymarket had the same matchup at 54c and 46c. Live prices are on the board above.
Who is favored in Orioles vs Mets on September 15?
The Mets are favored at an implied 55%, despite entering at 69-81 against Baltimore's 73-78. DraftKings agrees, listing New York at -132 with a total of 8 runs.
Where can I trade the Orioles vs Mets game?
Both Kalshi and Polymarket list the game, but the liquidity is lopsided. Kalshi has handled $1.8K on the Mets moneyline and $909 on the Orioles, while Polymarket shows $23.64 of lifetime volume on each leg.
When does the Orioles vs Mets market resolve?
It resolves on the result of the September 15, 2026 game at Citi Field, first pitch 7:10 PM ET. Both platforms settle once the game is official and final, typically within hours of the last out.
What should I watch before first pitch?
Confirmation of the probable starters, since ESPN listed Sean Manaea (5-7, 4.79) and Shane Baz (6-15, 4.05) as of September 14 and lineup cards change. The Over 9.5 total at 35.5c and the 50c first-inning run prop are the two lines actually drawing money.