Red Sox vs Blue Jays Prediction Market Odds, August 10, 2026
| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
â–¶Sox | -1.5 49%48% | O 8.5 50%48% | 62%63% | 63% Polymarket |
â–¶Jays | +1.5 51%52% | U 8.5 50%52% | 39%38% | 39% Kalshi |
| Spread | Total | Moneyline | Best ML | |
|---|---|---|---|---|
â–¶Boston Red Sox | -1.5 | O 8.5 | 63% Polymarket | |
â–¶Toronto Blue Jays | +1.5 | U 8.5 | 39% Kalshi |
Boston is the 62c road favorite at Rogers Centre on Monday, August 10, 2026, and Kalshi and Polymarket price the side identically at 62c Red Sox and 39c Blue Jays. The gap is a pitching gap: Sonny Gray (14-2, 2.78 ERA) against Jameson Taillon (2-6, 5.96 ERA). Boston enters 64-53 and 35-22 on the road, Toronto 56-63 and last in the AL East at 16 games back. The live board above carries the current moneyline, run line, total, and prop ladders for both books.
Boston arrives at Rogers Centre 64-53 and priced at 62c on the moneyline, a firm road number for a club that just dropped two straight at home. Toronto sits 56-63 and 16 games back in the AL East, last in the division Boston is chasing from third at 7 games out. The pitching matchup is the whole gap: Sonny Gray (14-2, 2.78 ERA) against Jameson Taillon (2-6, 5.96 ERA). Kalshi and Polymarket agree to the cent on the winner market, so the pricing questions on this board live on the run line and the total, not on the side.
Red Sox vs Blue Jays Market Context
Boston is 35-22 away from Fenway Park and 8-2 in its last ten games, the best ten-game stretch of any team in the division outside Tampa Bay. The most recent three went sideways: the Red Sox beat the Athletics 13-1 on August 7, then lost 7-3 on August 8 and 4-3 on August 9 to drop the home series, with the finale trading at 69c on the Boston side. Toronto walked the opposite path into this opener, winning 5-4 and 7-5 at Philadelphia on August 7 and August 8 before losing 7-6 on August 9. The Blue Jays were a 37c underdog in that Philadelphia finale, so 39c here reads as their standing market baseline rather than a divisional discount.
Boston has been the most aggressively repriced team on the board since the trade deadline, with its World Series number roughly doubling over that window. The same direction shows up in this game. The Boston winner line opened the session at 60c on both Kalshi and Polymarket and has traded up to 62c, with Toronto sliding 41c to 39c. Two cents is a modest move, but it is one-directional on both venues at the same time, which is what a market that has settled on a read looks like rather than one still arguing with itself. That Boston line alone carries roughly $98K in combined lifetime volume across the two books ($91.9K Kalshi, $6.9K Polymarket), the heaviest single row on this board.
There is no cross-platform edge on the side. Both venues print Boston 62c and Toronto 39c, and the 101c sum across the pair is standard exchange vig, not a mispricing. The small disagreements sit one level down: Over 7.5 runs is 57c on Kalshi and 56c on Polymarket, Boston -1.5 is 49c on Kalshi and 48c on Polymarket, and Toronto -1.5 is 25c on Kalshi and 26c on Polymarket. Those are one-cent gaps, which is about as tight as a two-book MLB game board gets.
Gray is the reason the number is 62c and not 56c. He is 14-2 with a 2.78 ERA, and the Kalshi strikeout ladder prices him accordingly at 71c for 4 or more strikeouts, 33c for 6 or more, and 20c for 7 or more. Taillon carries a 5.96 ERA into the start and his ladder sits a full step lower, 82c for 3 or more strikeouts and 28c for 6 or more. Vladimir Guerrero Jr. is the Toronto bat the prop market is built around, at 67c for 1 or more hits, 40c for 2 or more total bases, and 12c to leave the yard. For the wider MLB market picture, this is the marquee divisional opener on the Monday slate.
What the Red Sox vs Blue Jays Spread and Total Imply
The run line prices Boston -1.5 at 48.5c and Toronto -1.5 at 25.5c. Read against the 62c moneyline, that says the market gives Boston roughly a 78% chance of winning by two or more runs conditional on winning at all, which is an unusually blowout-leaning shape for a road favorite. Boston -2.5 at 36.5c and Boston -3.5 at 28c on Kalshi extend the same slope. Toronto -2.5 sits at 17c and Toronto -3.5 at 11c, so the market is not pricing much Blue Jays upside beyond a one-run win.
The total lands right on 8.5. Over 8.5 runs trades at 48.5c, Over 7.5 at 56.5c, and Over 9.5 at 38c, which brackets the fair number between 8 and 9 with the midpoint effectively at 8.5. Team totals split the difference the way the ERAs suggest: Boston over 4.5 runs is 52c on Kalshi while Toronto over 4.5 runs is 36c, an implied gap of about a run between the two offenses. The first-five-innings market repeats it, with Over 4.5 runs through five at 51c and a run scoring in the first inning at 48c. Polymarket also runs a three-way first-five market, Boston 51c, Toronto 36c, and a tie at 15c, which is the cleanest single expression of the Gray-versus-Taillon edge on the board.
When the Red Sox vs Blue Jays Market Resolves
The moneyline resolves to the team that wins the game at Rogers Centre on Monday, August 10, 2026, first pitch scheduled for 7:07 pm ET. Run line and total contracts settle on the final score including extra innings, and first-five-innings markets settle on the score after five completed innings. Contracts pay $1 per share on the correct side and $0 on the other. If the game is postponed and replayed on a later date, both platforms carry it to the makeup date rather than voiding, and a game called before it is official reverts to platform-specific void rules.
Key Red Sox vs Blue Jays Catalysts
Starting pitching gap: Sonny Gray at a 2.78 ERA against Jameson Taillon at 5.96 is the single largest input into the 62c price.
Boston road split: the Red Sox are 35-22 away from home versus 29-31 at Fenway Park, the reverse of the usual pattern and a reason the road number holds at 62c.
Blue Jays home form: Toronto is 28-31 at Rogers Centre and 6-4 in its last ten, better than a 56-63 record suggests.
Run line shape: Boston -1.5 at 48.5c implies roughly a 78% chance of a multi-run win given a Boston win, so a one-run game is the main way the favorite backers get a split result.
Total at 8.5: Over 8.5 at 48.5c is the closest thing to a coin flip on the board, and it moves first if either bullpen is short.
Cross-platform convergence: Kalshi and Polymarket agree to the cent on the side and within one cent on the total and spread, so there is no venue arbitrage to harvest here.
Related Red Sox vs Blue Jays Markets
Track the season-long picture on the Boston Red Sox team hub and the Toronto Blue Jays team hub, both of which carry the division and postseason futures alongside every scheduled game. The two clubs' prior series set the context for this one: Boston was the heavy favorite it failed to convert against the Athletics at Fenway Park, and Toronto was the road underdog that took two of three against the Phillies in Philadelphia. For the full Monday slate and every other cross-platform game board, start at the MLB league hub.
Resolution Criteria
The moneyline resolves to the team that wins the game at Rogers Centre in Toronto on Monday, August 10, 2026, scheduled for 7:07 pm ET. Run line contracts settle on the final margin and total contracts settle on combined runs scored, both including extra innings, while first-five-innings markets settle on the score after five completed innings. Each contract pays $1 per share on the winning side and $0 on the losing side. If the game is postponed, both Kalshi and Polymarket carry the contract to the rescheduled date rather than voiding it; a game halted before it becomes official reverts to platform-specific void and refund rules.
Key Factors
- Sonny Gray (14-2, 2.78 ERA) vs Jameson Taillon (2-6, 5.96 ERA) is the largest single input into the 62c Boston price
- Boston is 35-22 on the road versus 29-31 at home, an inverted split that supports the road favorite number
- Toronto is 28-31 at Rogers Centre and 6-4 in its last ten despite a 56-63 overall record
- Boston -1.5 at 48.5c implies roughly a 78% chance of a multi-run win conditional on a Boston win
- Over 8.5 runs at 48.5c is the closest line to a coin flip on the board and the first number to move on bullpen news
- Kalshi and Polymarket agree to the cent on the moneyline and within one cent on spread and total, so there is no venue arbitrage
What are the current Red Sox vs Blue Jays odds?
As of August 10, 2026, Boston is the 62c favorite and Toronto is 39c, and both Kalshi and Polymarket print the same two numbers. The Boston side opened the session at 60c and traded up to 62c.
Who is favored in Red Sox vs Blue Jays on August 10, 2026?
Boston is favored at 62c, an implied probability of about 62%. Toronto at 39c implies about 39%, with the extra cent across the pair representing standard exchange vig.
Who are the probable starting pitchers?
Boston starts Sonny Gray, who is 14-2 with a 2.78 ERA. Toronto starts Jameson Taillon, who is 2-6 with a 5.96 ERA. That ERA gap of more than three runs is the main reason the road team is a 62c favorite.
What are the Red Sox vs Blue Jays spread and total?
The run line has Boston -1.5 at 48.5c and Toronto -1.5 at 25.5c. The total sits on 8.5 runs, with Over 8.5 at 48.5c, Over 7.5 at 56.5c, and Over 9.5 at 38c as of August 10, 2026.
Where can I trade the Red Sox vs Blue Jays market?
Both Kalshi and Polymarket list this game, and the board above compares them side by side. Kalshi carries the deeper book on the moneyline at about $91.9K in lifetime volume on the Boston line versus $6.9K on Polymarket.
What should I watch before the game resolves?
Watch the total first. Over 8.5 at 48.5c is the most sensitive number on the board and reprices fastest on bullpen availability or Rogers Centre roof and wind conditions, and the first-five-innings market on Polymarket (Boston 51c, Toronto 36c, tie 15c) is the cleanest read on the starting pitcher edge.