Mets vs Guardians Prediction Market Odds, August 6, 2026
| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
▶Mets | — | O 1 50%46% | 48%48% | 48% Kalshi |
▶Guardians | — | U 1 50%54% | 53%53% | 53% Kalshi |
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Cleveland is a 53c home favorite for the Thursday finale at Progressive Field, priced identically on Kalshi and Polymarket, with New York at 47c on Kalshi and 48c on Polymarket. That is a near coin flip between a 57-57 Guardians club and a 48-66 Mets club, and the reason is the starting pitching: Foster Griffin (12-3, 3.06 ERA) against Nolan McLean (7-7, 3.29 ERA). Cleveland opened at 51c on Tuesday, spiked to 57c, and has settled back to 53c.
Cleveland closes a three-game set with New York as a 53c home favorite, and that price says the market is trading the arms rather than the standings. The Guardians sit 57-57 and second in the AL Central; the Mets are 48-66, fifth in the NL East, and 23-32 on the road. Nine games of separation in the standings has been compressed into a 5.5c gap on the moneyline, because the two probable starters are the closest thing on the Thursday slate to a matched pair.
Mets vs Guardians Market Context
Foster Griffin takes the ball for Cleveland at 12-3 with a 3.06 ERA, 14th among qualified starters. Nolan McLean answers for New York at 7-7 with a 3.29 ERA. That is a 0.23 gap in earned run average and a win-loss record split that says more about run support than about stuff. Cleveland has scored 448 runs, 29th in the league, hitting .231 as a team, 28th. New York has scored 463, 27th, hitting .233, 26th. Neither lineup has been a problem to solve; both rotations are the reason these teams are still in games.
Where the two clubs actually separate is on the run-prevention side. Cleveland's staff carries a 3.75 team ERA, seventh in baseball, backed by 34 saves, tied for sixth. New York's staff sits at 4.09, 14th, with 19 saves, 29th, and 76 errors behind it, 29th. That bullpen and defense gap is the real argument for the home side, and it is roughly what 53c pays for. Chase DeLauter is Cleveland's most productive bat at .279 with 55 RBI, with Rhys Hoskins leading the club at 12 home runs. New York counters with Bo Bichette at 54 RBI, Marcus Semien at 12 home runs, and Carson Benge hitting .264.
The cross-platform read is unusually tight. Cleveland prices at 53c on Kalshi and 53c on Polymarket, a dead heat. The Mets side is 47c on Kalshi and 48c on Polymarket, so Kalshi is the better entry for New York backers by a cent. Combined book volume on the game sits near $1.7K, with the Mets moneyline row carrying roughly three quarters of it, so this is a thin market where a single sized order moves the number.
Line movement has been the more interesting signal. Cleveland opened at 51c on Kalshi on Tuesday, August 4, ran up to 57c by that afternoon, then bled back down and has settled at 53c through Wednesday morning. That is a 6c round trip that ended two cents above the open. The New York side never moved much at all, holding a 46c to 49c band the entire time and sitting at 47c now, which means the Cleveland spike was a one-sided push rather than a genuine repricing of the matchup. New York also took the series opener 6-2 on August 4, so the market has already absorbed one result that went against the home club without materially rerating it.
One note on board coverage: this game carries a moneyline and a first-inning run market, priced at 48.5c on average (50c Kalshi, 47c Polymarket). A run line and a game total are not posted on either book for this matchup, so the moneyline and the first-inning question are the only two ways to express a view here. The August 5 middle game prices the same two clubs a day earlier and is the cleanest comparable for how this board has been behaving.
When the Mets vs Guardians Market Resolves
The market resolves on the final score of the game at Progressive Field on Thursday, August 6, 2026, first pitch 1:10 PM ET. The winning team's contract pays out at $1 per share and the losing side settles at zero. Baseball has no draw, so exactly one of the two moneyline contracts resolves yes. Both Kalshi and Polymarket settle off the official final result once the game is called complete.
Key Mets vs Guardians Catalysts
Starting pitching: Foster Griffin (12-3, 3.06 ERA) against Nolan McLean (7-7, 3.29 ERA) is the tightest starter matchup on the board, and it is why a 57-57 team is only a 53c favorite over a 48-66 team.
Bullpen and defense gap: Cleveland's 3.75 team ERA ranks seventh and its 34 saves rank tied for sixth; New York's 4.09 ERA, 19 saves, and 76 errors are the structural case for the home side late.
Two bottom-five offenses: Cleveland at 448 runs (29th) and New York at 463 (27th) means low-scoring script risk, which raises the variance on a one-run outcome and flattens the favorite's edge.
The 6c round trip: Cleveland traded from 51c up to 57c and back to 53c inside 24 hours while the Mets side never left a 46c to 49c band, a one-sided push that faded rather than a repricing.
Cross-platform entry: the Cleveland side is identical at 53c on both books; the New York side is 47c on Kalshi against 48c on Polymarket, so Kalshi holds the better price for the underdog.
Series context: New York took the opener 6-2 on August 4 at Progressive Field, and the market has not marked Cleveland down for it heading into the finale.
Related Mets vs Guardians Markets
Track the full club picture on the Cleveland Guardians hub and the New York Mets hub, where season-long and game-level markets sit in one place. The rest of the Thursday slate includes the Blue Jays at Cubs board and the Marlins at Braves finale. The complete daily board, plus season futures across both platforms, lives on the MLB hub.
Resolution Criteria
The market resolves to the team that wins the game between the New York Mets and the Cleveland Guardians at Progressive Field in Cleveland on Thursday, August 6, 2026, scheduled for 1:10 PM ET. The winning team contract pays $1 per share and the losing team contract resolves to zero. Baseball has no draw outcome, so exactly one of the two moneyline contracts settles yes. The first-inning run market resolves yes if either club scores at least one run in the top or bottom of the first inning. Settlement on both Kalshi and Polymarket follows the official Major League Baseball final result once the game is declared complete, including games shortened to five or more innings. If the game is postponed and replayed on a later date, each platform applies its own postponement rule, typically settling on the rescheduled completion or voiding the contract.
Key Factors
- Foster Griffin (12-3, 3.06 ERA) vs Nolan McLean (7-7, 3.29 ERA), a 0.23 ERA gap between the probable starters
- Cleveland team ERA 3.75 (7th) and 34 saves vs New York 4.09 ERA, 19 saves, and 76 errors (29th)
- Two bottom-five offenses: Cleveland 448 runs (29th), New York 463 runs (27th), raising low-scoring variance
- Cleveland traded 51c to 57c and back to 53c in 24 hours while the Mets side held a 46c to 49c band
- Cross-platform entry: Guardians 53c on both books, Mets 47c on Kalshi vs 48c on Polymarket
- New York won the series opener 6-2 on August 4 and the market has not marked Cleveland down for it
What are the current Mets vs Guardians odds?
As of August 6, 2026, the Cleveland Guardians are the 53c home favorite, priced at 53c on Kalshi and 53c on Polymarket. The New York Mets trade at 47c on Kalshi and 48c on Polymarket, an average of 47.5c.
Who is favored in Mets vs Guardians on August 6, 2026?
Cleveland is favored at 53c, an implied probability of roughly 53%. That is a narrow edge given the Guardians are 57-57 and the Mets are 48-66, and it reflects the near-even starting pitching matchup rather than the records.
Who are the probable starting pitchers for Mets vs Guardians?
Cleveland starts Foster Griffin, who is 12-3 with a 3.06 ERA, ranked 14th among qualified starters. New York starts Nolan McLean, who is 7-7 with a 3.29 ERA. The 0.23 ERA gap is the tightest pairing on the Thursday slate.
Where can I trade the Mets vs Guardians market?
The game trades on both Kalshi and Polymarket. Kalshi lists it under the KXMLBGAME series and Polymarket carries the same moneyline plus a first-inning run market. Combined board volume sits near $1.7K, so this is a thin market.
When does the Mets vs Guardians market resolve?
It resolves on the final score at Progressive Field on Thursday, August 6, 2026, with first pitch at 1:10 PM ET. The winning side pays $1 per share and the losing side settles at zero.
What should I watch before Mets vs Guardians resolves?
Watch whether Cleveland retests 57c, the level it reached on August 4 before fading to 53c, and watch the August 5 middle game result, which is the last input the market gets before the finale prices in.