Mets vs Rays Prediction Market Odds, September 1, 2026
| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
Mets | +1.5 — | O 6.5 9% | 0%0% | — |
Rays | -1.5 — | U 6.5 — | 100%100% | 100% Kalshi |
| Spread | Total | Moneyline | Best ML | |
|---|---|---|---|---|
New York Mets | +1.5 — | O 6.5 | 0%0% | — |
Tampa Bay Rays | -1.5 — | U 6.5 — | 100%100% | 100% Kalshi |
Tampa Bay is the 55c moneyline favorite for the middle game of this three game set (55c Kalshi, 55c Polymarket), with New York at 46c (47c Kalshi, 45c Polymarket) as of the evening of August 31, 2026. The Rays are 82-55 and lead the AL East, the Mets are 62-76 and sit fifth in the NL East, and New York already took the opener 3-2. Roughly $119.8K has traded across both books on this game.
Tampa Bay opens as the 55c moneyline favorite for the middle game of this three game set at Tropicana Field, and the price is doing more work than the pitching matchup suggests. The Rays are 82-55 and lead the AL East. The Mets are 62-76, fifth in the NL East, and 14 games under .500. New York took the opener 3-2 on August 31, which is the shape this board expects again: the total sits at eight runs and neither run line clears 37c. About $119.8K in lifetime volume has traded across Kalshi and Polymarket on the game.
Mets vs Rays Pitching Matchup and Form
Freddy Peralta starts for Tampa Bay at 6-11 with a 5.11 ERA, 53rd among ranked starters this season. Sean Manaea goes for New York at 4-6 with a 4.55 ERA. The moneyline favorite is carrying the worse starter by more than half a run of ERA, and that is the single clearest reason the Rays sit at 55c rather than the 62c to 65c a first place club normally commands at home against a team this far under .500.
The rest of the roster is what closes the gap. Junior Caminero has 37 home runs and 87 RBI for Tampa Bay and Chandler Simpson is hitting .311. The Rays are 46-24 at home, a .657 clip against .537 on the road, so roughly two thirds of their edge here is venue rather than form. New York counters with Juan Soto at 22 home runs and Bo Bichette at 66 RBI, but the Mets are 30-37 away from Citi Field and 4-6 over their last 10. Tampa Bay is 6-4 in the same window, having taken two straight from San Diego before dropping the series opener 3-2.
What the Mets vs Rays Spread and Total Imply
The run line is where the market says this is closer to a coin flip than the moneyline reads. Tampa Bay at -1.5 prices 36.5c (36c Kalshi, 37c Polymarket) and New York at -1.5 prices 34.5c (34c Kalshi, 35c Polymarket). A 2c gap between the two run lines, against a 9c gap on the moneyline, means the board expects a one run game and gives the Mets almost the same shot at a multi run win as the favorite. The -2.5 tier says the same thing: Tampa Bay 26.5c, New York 24.5c.
On the total, Over 7.5 runs trades at 52.5c (52c Kalshi, 53c Polymarket), Over 8.5 at 44c and Over 9.5 at 34c. That centers the game right at eight runs, in line with the number the sportsbook market posted. Polymarket also carries a five inning leader market at Tampa Bay 43c, New York 40c and a tie at 16c, and Kalshi's first inning run market sits at exactly 50c.
Cross platform, the two books agree to the cent on Tampa Bay at 55c. The only disagreement on the board is the New York leg, where Kalshi shows 47c and Polymarket 45c. Polymarket is the cheaper entry for a Mets position and Kalshi the better exit, but 2c is one tick on a thin book and is not a signal by itself. Priced together the pair sums to 101c to 102c, so the vig on this board is unusually light.
Line movement has been small and slow. The board's snapshot series reaches back about two and a half hours, to roughly 8:10 PM ET on August 31, so this is the full observed range and not a full day read. Over that window Kalshi's Rays moneyline traded 54c and printed 55c on the last three captures, while Polymarket held 55c throughout. The New York leg held 47c on Kalshi and 46c on Polymarket at every capture. Kalshi's 24 hour turnover on the Rays side climbed from about $4.3K to $7.7K across the same stretch, so the 1c tick came with volume behind it rather than a stale quote drifting.
When the Mets vs Rays Market Resolves
The game is scheduled for 6:40 PM ET on September 1, 2026 at Tropicana Field in St. Petersburg, a start time the Kalshi ticker and the ESPN scoreboard agree on independently. Every contract on this board settles off the official final score once the game is complete: the moneyline pays the winner, the run line settles on the margin, and the total settles on combined runs. Kalshi and Polymarket both close the game the same night in normal conditions.
Key Mets vs Rays Catalysts
- Peralta's 5.11 ERA: the Rays are favored with the worse starter, so an early Mets crooked number moves this board faster than most.
- Tampa Bay's home split: 46-24 at Tropicana Field against 36-31 on the road is most of the 9c moneyline edge.
- The 2c cross platform gap on New York: Kalshi 47c versus Polymarket 45c is the only book to book disagreement on the game.
- The eight run total: Over 7.5 at 52.5c and Over 8.5 at 44c bracket the number tightly, so a lineup or bullpen change moves it more than the moneyline.
- Prop flow: Jonathan Aranda 3+ total bases at 20c is the most traded prop on the board, with Francisco Lindor and Yandy Díaz both 16c to homer.
- Series stakes: New York leads this set 1-0 and the Rays are defending an AL East lead, so game three on September 2 carries the sweep risk.
Related Mets vs Rays Markets
The August 31 series opener is the direct comparison, a 3-2 Mets win against a similar price. Tampa Bay's season stakes trade on the AL East division market and the 2026 World Series board, both of which reprice off results like this one. For team level context and every other game on the schedule, see the Tampa Bay Rays hub, the New York Mets hub, and the full MLB market board.
Resolution Criteria
Resolves to the team that wins the game played on September 1, 2026 at Tropicana Field in St. Petersburg, first pitch scheduled for 6:40 PM ET. Moneyline contracts pay $1 per share for the winning team and $0 for the loser, settled on the official final score including extra innings. Run line contracts settle on the final margin of victory, and total contracts settle on combined runs scored by both teams. If the game is suspended and completed on a later date, both platforms settle on the completed final score. If the game is postponed and not played, or is called before it becomes an official game, contracts void and refund per each platform's published rules.
Key Factors
- Freddy Peralta (6-11, 5.11 ERA) starts for Tampa Bay against Sean Manaea (4-6, 4.55 ERA)
- Tampa Bay is 46-24 at home versus 36-31 on the road, most of the moneyline edge
- New York leg splits 47c Kalshi against 45c Polymarket, the only cross-platform gap on the board
- Total is centered at eight runs: Over 7.5 at 52.5c, Over 8.5 at 44c
- Jonathan Aranda 3+ total bases at 20c is the most traded prop on the board
- Mets lead the three game set 1-0 after a 3-2 win in the opener
What are the current Mets vs Rays odds?
As of the evening of August 31, 2026, Tampa Bay is the 55c favorite (55c on Kalshi, 55c on Polymarket) and New York trades at 46c (47c on Kalshi, 45c on Polymarket). The run line has Tampa Bay -1.5 at 36.5c and New York -1.5 at 34.5c.
When does the Mets vs Rays market resolve?
It settles on the final score of the September 1, 2026 game at Tropicana Field, first pitch 6:40 PM ET. Both Kalshi and Polymarket close the contracts the same night once the game goes official.
Where can I trade the Mets vs Rays market?
The game trades on both Kalshi and Polymarket, with about $119.8K in lifetime volume across the two books. Kalshi carries the deeper board, including run lines, team totals, first inning runs, and 103 player prop lines.
Who is favored in Mets vs Rays and by how much?
Tampa Bay is favored at a 55c average price, an implied 55% win probability against 46% for New York. That is a narrow edge for an 82-55 team at home, and it reflects Freddy Peralta's 5.11 ERA on the mound.
What should I watch before Mets vs Rays resolves?
Watch the first two innings against Peralta, since the Rays are priced as favorites with the weaker starter and an early deficit repriced this board quickly in the 3-2 opener. Also watch the eight run total, which sits at 52.5c on Over 7.5 and moves on late lineup changes.