Cleveland Guardians vs Detroit Tigers Prediction Market Odds, August 13, 2026
| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
▶Guardians | -1.5 40%27% | O 1 47%47% | 40%40% | 40% Kalshi |
▶Tigers | +1.5 60%73% | U 1 53%53% | 25%27% | 27% Polymarket |
| Spread | Total | Moneyline | Best ML | |
|---|---|---|---|---|
▶Cleveland Guardians | -1.5 | O 1 | 40% Kalshi | |
▶Detroit Tigers | +1.5 | U 1 | 27% Polymarket |
Guardians vs Tigers closes a three-game set at Comerica Park with Cleveland priced as the road favorite at 52.5c (52c Kalshi, 53c Polymarket) against Detroit at 48.5c (49c Kalshi, 48c Polymarket) as of August 13, 2026. That is a reversal inside the series: Detroit was the 54c home favorite on August 11 and the 56c favorite on August 12. The two clubs sit one game apart at 59-62 and 59-61, and the starter card, Parker Messick at a 2.57 ERA against Keider Montero at 3.38, is what moved the price across the aisle.
Cleveland arrives at Comerica Park as the road favorite for the finale, which is not how this series started. Detroit was the 54c home favorite on August 11 and the 56c favorite on August 12, and the two clubs split those games (Detroit 6-4, then Cleveland 6-4). For the August 13, 2026 finale the board flips: Cleveland sits at 52.5c on the cross-platform average and Detroit at 48.5c. First pitch is scheduled for 1:10 p.m. ET.
Guardians vs Tigers Market Context
Both clubs are hovering at .500 in a division nobody has taken control of. Chicago leads the AL Central at 62-57, Detroit is 59-61 and 3.5 games back, and Cleveland is 59-62 and 4 games back. The standings math on this single game is direct. A Cleveland win moves the Guardians to 3.5 back and drops the Tigers to 4, reversing their order in the division. A Detroit win pushes the Tigers to 3 back and Cleveland to 4.5.
Recent form argues against the price. Detroit is 7-3 over its last 10 games. Cleveland is 3-7, having dropped three straight to the Mets and two of three to the White Sox before arriving in Detroit. The market is not paying for that form, and it is not paying for the season run profile either. Detroit averages roughly 4.6 runs per game and allows 3.9. Cleveland averages roughly 4.0 and allows 4.2. That is close to a full run per game of differential in Detroit's favor, and Cleveland is still the favorite.
The cross-platform read is tight. Cleveland is 52c on Kalshi and 53c on Polymarket, a 1c difference that sits inside normal book-to-book noise rather than a real dislocation. Each book sums its two sides to 101c, the standard overround, which normalizes to about 52% Cleveland and 48% Detroit. The two venues behaved differently overnight: Kalshi held Cleveland at 52c across the entire snapshot window while Polymarket walked from 51c up to 53c. The direction agreed, but only one book actually moved. Depth is concentrated on the moneyline, with about $4.8K traded on the Kalshi Cleveland contract, about $6.0K on the Kalshi Detroit contract, and about $4.9K on the Polymarket side of the matchup.
Guardians vs Tigers Pitching Matchup
Cleveland starts Parker Messick (9-6, 2.57 ERA). Detroit answers with Keider Montero (8-7, 3.38 ERA). That gap of roughly eight-tenths of a run in ERA is the entire case for a sub-.500 road team being favored, and the derivative markets carry the same logic. Kalshi prices Cleveland to score more than 3.5 runs at 60c and Detroit to score more than 3.5 runs at 53c, which is the board saying the softer start belongs to Detroit even though Detroit has the better offense on the season.
The game total is set at 8.5 runs, with the over at 48c on Kalshi and 48c on Polymarket, and the over 7.5 at 55c on Kalshi and 56c on Polymarket. That is a restrained script, consistent with two starters who have both pitched better than league average this season. The run line is where conviction shows up: Cleveland -1.5 trades at 40c on both books while Detroit -1.5 trades at 32c. An 8c separation on identical margins is wider in relative terms than the 4c separation on the moneyline, which reads as the market expecting a Cleveland win, when it comes, to be the more comfortable of the two outcomes.
Detroit's lineup is the counterweight. Dillon Dingler leads the Tigers with 26 home runs and 80 RBI, and Kevin McGonigle is hitting .286. Cleveland counters with Chase DeLauter at .283 and 57 RBI plus Rhys Hoskins at 13 home runs, a thinner power profile. Polymarket's five-inning market has Cleveland at 44c, Detroit at 38c, and a tie at 16c, so the early-game read leans the same way as the full-game price without much margin. The first-inning run market is close to a coin flip at 46c on Kalshi and 47c on Polymarket.
When the Guardians vs Tigers Market Resolves
The moneyline resolves to the team that wins the game at Comerica Park on August 13, 2026, with a scheduled 1:10 p.m. ET first pitch. Kalshi lists the game under its KXMLBGAME series with a separate contract per team, and Polymarket lists the same matchup on its MLB event page for the date. Settlement follows the official final score, so the run line and the total settle off the same box score, and suspended or postponed games follow each platform's published rules rather than resolving on partial play.
Key Guardians vs Tigers Catalysts
Starting pitching gap: Parker Messick (2.57 ERA) against Keider Montero (3.38 ERA) is the single reason a 59-62 road team is favored over a 59-61 home team.
Standings flip: Cleveland at 4 games back and Detroit at 3.5 back of Chicago's 62-57 means the winner ends the day ahead of the loser in the AL Central order.
Form versus price: Detroit is 7-3 in its last 10 and Cleveland is 3-7, so the market is explicitly siding against the hotter team.
Run environment: Detroit's 4.6 runs per game against Cleveland's 4.0 is the path to an upset, and the 8.5 total says the board does not expect it to matter.
Venue behavior: Kalshi held Cleveland at 52c overnight while Polymarket moved from 51c to 53c, a 1c residual gap that is noise rather than a signal.
Related Guardians vs Tigers Markets
The middle game of this set is covered on the August 12 Guardians vs Tigers page, where Detroit was the 56c home favorite and lost 6-4. Team-level futures and season markets for both clubs sit on the Cleveland Guardians hub and the Detroit Tigers hub. The full slate of cross-platform baseball pricing, including division and World Series futures, lives on the MLB prediction markets hub, and the wider board across every league is on the sports hub.
Resolution Criteria
The moneyline resolves to the team that wins the game between the Cleveland Guardians and the Detroit Tigers at Comerica Park on August 13, 2026, first pitch scheduled for 1:10 p.m. ET. Each team contract pays $1 per share if that team wins and $0 otherwise. The run line settles on the final margin (Cleveland -1.5 needs a Cleveland win by 2 or more runs, Detroit -1.5 the same in reverse) and the 8.5-run total settles on combined runs in the official final score, including extra innings. Kalshi lists the game under its KXMLBGAME series with one contract per team and Polymarket lists the same matchup on its MLB event page for the date. If the game is postponed, suspended, or shortened, each platform applies its own published MLB rules, which generally require an official game for action and otherwise void or roll the contract rather than settling on partial play.
Key Factors
- Starting pitching gap: Parker Messick (9-6, 2.57 ERA) against Keider Montero (8-7, 3.38 ERA)
- Standings flip: Cleveland 59-62 and 4 games back, Detroit 59-61 and 3.5 back of Chicago at 62-57
- Form versus price: Detroit is 7-3 in its last 10, Cleveland is 3-7, and the market sides against the hotter team
- Run environment: Detroit scores 4.6 per game and allows 3.9, Cleveland scores 4.0 and allows 4.2, total priced at 8.5
- Run line conviction: Cleveland -1.5 at 40c versus Detroit -1.5 at 32c on both books
- Venue split: Kalshi held Cleveland at 52c overnight while Polymarket moved 51c to 53c
What are the current Guardians vs Tigers odds?
As of August 13, 2026, Cleveland is the road favorite at 52.5c on the cross-platform average (52c Kalshi, 53c Polymarket) and Detroit is at 48.5c (49c Kalshi, 48c Polymarket). Each book sums its two sides to 101c, the standard overround, which normalizes to roughly 52% Cleveland and 48% Detroit.
Who is favored in Guardians vs Tigers on August 13, 2026?
Cleveland, despite playing on the road and carrying a 59-62 record against Detroit at 59-61. The market is pricing the starting pitching gap, Parker Messick at a 2.57 ERA against Keider Montero at 3.38, rather than recent form, where Detroit is 7-3 in its last 10.
Where can I trade the Guardians vs Tigers market?
Both Kalshi and Polymarket list this game. Kalshi runs it under the KXMLBGAME series with one contract per team and carries the deeper alt-line ladder, including team totals and first-five-inning markets. Polymarket lists the same matchup on its MLB event page for August 13, 2026.
When does the Guardians vs Tigers market resolve?
It resolves once the game goes final on August 13, 2026. First pitch at Comerica Park is scheduled for 1:10 p.m. ET, so settlement on both platforms typically lands within a few hours of that.
What are the Guardians vs Tigers spread and total?
The run line has Cleveland -1.5 at 40c and Detroit -1.5 at 32c on both Kalshi and Polymarket. The game total is 8.5 runs, with the over at 48c on both books, and the over 7.5 at 55c on Kalshi and 56c on Polymarket.
What should I watch before Guardians vs Tigers resolves?
The lineup card and the first three innings. Dillon Dingler (26 home runs, 80 RBI) is Detroit’s swing bat, and Detroit averaging 4.6 runs per game is what punishes the market read if Montero holds Cleveland down. Kalshi prices a first-inning run at 46c.