Orioles vs Athletics Prediction Market Odds, August 29, 2026
| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
â–¶Orioles | -1.5 65%68% | O 9.5 19%21% | 27%85% | 85% Polymarket |
â–¶Athletics | +1.5 35%32% | U 9.5 81%79% | 17%16% | 17% Kalshi |
| Spread | Total | Moneyline | Best ML | |
|---|---|---|---|---|
â–¶Baltimore Orioles | -1.5 | O 9.5 | 85% Polymarket | |
â–¶Athletics | +1.5 | U 9.5 | 17% Kalshi |
Baltimore is the 57c favorite on the consensus (58c Kalshi, 56c Polymarket) for a 10:05 PM ET first pitch at Sutter Health Park. The Orioles are 66-69 and 32-35 on the road, the Athletics 53-82 and 25-42 at home. Shane Baz (4-14, 4.04 ERA) faces Jack Perkins (3-9, 6.68 ERA), a reliever by role, and the board carries $24.3K in lifetime cross-platform volume with the total pinned at 9.5 runs.
Baltimore is the road favorite at 57c on the consensus (58c Kalshi, 56c Polymarket) for a 10:05 PM ET first pitch at Sutter Health Park in Sacramento, and both books agree the Athletics are the 44c side. The Orioles come in 66-69 overall and 32-35 away from Camden Yards. The Athletics are 53-82 and a rough 25-42 at home. The board carries $24.3K in lifetime cross-platform volume, roughly $10.5K of it sitting on the Baltimore moneyline leg alone, which makes the moneyline the only genuinely liquid line on the page.
Orioles vs Athletics Market Context
The two books have split slightly on the favorite. Kalshi has held Baltimore at 58c through 45 snapshots today inside a tight 57c to 59c band. Polymarket opened Baltimore at 59c in the earliest capture the board carries for this game and has drifted down to 56c across 26 snapshots. The Athletics side on Kalshi moved the other way, from 42c up to 44c. That leaves a 2c gap on the same question, with Polymarket currently the cheaper place to be long Baltimore and Kalshi the cheaper place to be long the Athletics. Kalshi's two legs sum to 102c against Polymarket's 100c, which is the vig showing up in the quotes rather than a disagreement about the game.
The alt ladder tells a more interesting story than the moneyline. The run line has Baltimore -1.5 at 47c on both platforms, down from 49c when the ladder came online this morning, and the Athletics -1.5 at 28c. A 57c moneyline paired with a 47c run line is a market saying Baltimore wins by two or more nearly as often as it wins at all, which is the shape you get when one side is expected to score in bunches against a thin pitching staff rather than grind out a one-run night.
The total sits at 9.5 runs, with Over 9.5 priced 51c on Kalshi and 52c on Polymarket and $2.6K traded through it, the second-most active line on the board. That line has moved between 51c and 54c since it opened and has settled back at 51c, about as close to a true coin flip as a board gets. Over 8.5 is 62.5c and Over 10.5 is 44.5c, so the distribution is centered right on the posted number. A run in the first inning is 53.5c (54c Kalshi, 53c Polymarket).
Orioles vs Athletics Pitching Matchup
Baltimore sends Shane Baz, 4-14 with a 4.04 ERA. The record is ugly and the ERA is not, which is the standard signature of a starter on a .489 team. His strikeout props are the cleanest read on the board: 3+ strikeouts is 88c, the Over 3.5 is 76c on Kalshi against 68c on Polymarket, and the Over 4.5 is 59c on Kalshi against 53c on Polymarket. Those 6c to 8c gaps on the same strikeout number are the widest disagreements anywhere on this page, and they trade on near-zero volume, so treat them as thin quotes rather than a settled price.
Sacramento counters with Jack Perkins, 3-9 with a 6.68 ERA, and ESPN lists him at relief pitcher with three saves on the year. That matters more than the ERA. A bullpen arm getting the ball means Athletics innings three through six are a relief patchwork against a Baltimore lineup fronted by Pete Alonso, who leads the club in average (.272), home runs (32) and RBI (91). Alonso's 1+ hit prop is 73c and his 2+ hits plus runs plus RBI is 62c with $176 traded, the busiest player prop on the board. Gunnar Henderson's 1+ hit sits at 69c.
The Athletics offense is the argument for the Over more than for the underdog. Lawrence Butler leads the team at .228, Zack Gelof leads in home runs with 14, and Jeff McNeil leads in RBI with 46, numbers that would be middle-of-the-order production on a contender rather than team-leading marks. Against that profile, a 44c home dog with a 6.68 ERA starter is priced about where it should be, and the value question on this page is the total, not the side.
When the Orioles vs Athletics Market Resolves
The moneyline resolves to the team that wins the game at Sutter Health Park on August 29, 2026, first pitch 10:05 PM ET. Kalshi and Polymarket both settle off the official final score, so a game that goes extra innings settles on the extra-inning result and a rain-shortened official game settles on the score at the point it is called. The run line settles on the final margin and the totals settle on combined runs scored, including extra innings. Every contract on this board pays $1 per share on the winning outcome and $0 otherwise.
Key Orioles vs Athletics Catalysts
Baz workload: Shane Baz (4-14, 4.04 ERA) starts for Baltimore, and his 3+ strikeout prop at 88c is the market's read on how deep he goes.
Perkins is a reliever: Jack Perkins (3-9, 6.68 ERA) is listed as a relief pitcher with three saves, so the Athletics are covering the middle innings from the bullpen.
Cross-platform gap: Baltimore is 58c on Kalshi and 56c on Polymarket, a 2c split on the same question, and the strikeout props run 6c to 8c apart on almost no volume.
Total at 9.5: Over 9.5 runs is the second-busiest line on the board at 51c with $2.6K traded, and it has held a 51c to 54c range all morning.
Alonso leverage: Pete Alonso (.272, 32 HR, 91 RBI) leads Baltimore in all three slash categories, with his 1+ hit prop at 73c.
Home-park reality: The Athletics are 25-42 at Sutter Health Park this season, the worst split either team brings into the series.
Related Orioles vs Athletics Markets
Track the full slate of Baltimore contracts on the Orioles team hub and Sacramento's on the Athletics team hub. The season-long context lives in the AL East race, where Baltimore's 66-69 record has it playing spoiler, and the AL West race, where the Athletics have been out of the picture for months. For the futures side, the World Series market carries the widest field on the site, and every game trading tonight is on the MLB hub.
Resolution Criteria
Resolves to the team that wins the Baltimore Orioles at Athletics game played at Sutter Health Park in Sacramento on August 29, 2026, with a scheduled first pitch of 10:05 PM ET. Kalshi and Polymarket both settle off the official final score reported by MLB, including extra innings. A rain-shortened game that is official settles on the score at the point it is called. The run line settles on the final margin of victory and the total settles on combined runs scored by both teams. Each contract pays $1 per share on the winning outcome and $0 on every other outcome. If the game is postponed, each platform applies its own postponement rule, generally settling once the game is played on a rescheduled date or voiding the contract if it is not completed inside that platform window.
Key Factors
- Shane Baz (4-14, 4.04 ERA) starts for Baltimore with his 3+ strikeout prop at 88c
- Jack Perkins (3-9, 6.68 ERA) is listed as a relief pitcher, so Athletics middle innings come from the bullpen
- Baltimore is 58c on Kalshi against 56c on Polymarket, a 2c cross-platform split on the moneyline
- Total pinned at 9.5 runs with Over 9.5 at 51c and $2.6K traded, the second-busiest line on the board
- Pete Alonso (.272, 32 HR, 91 RBI) leads Baltimore in all three categories, 1+ hit priced at 73c
- Athletics are 25-42 at Sutter Health Park, the worst home split either club brings into the game
What are the current Orioles vs Athletics odds?
As of the morning of August 29, 2026, Baltimore is the 57c favorite on the consensus, priced at 58c on Kalshi and 56c on Polymarket. The Athletics are 44c on both platforms.
What is the run line and total for Orioles vs Athletics?
The run line has Baltimore -1.5 at 47c on both platforms and the Athletics -1.5 at 28c. The total is set at 9.5 runs, with Over 9.5 priced 51c on Kalshi and 52c on Polymarket.
Who is pitching in Orioles vs Athletics?
Baltimore starts Shane Baz, 4-14 with a 4.04 ERA. The Athletics start Jack Perkins, 3-9 with a 6.68 ERA, who is listed as a relief pitcher with three saves this season.
Where can I trade the Orioles vs Athletics market?
The game trades on both Kalshi and Polymarket, with about $24.3K in lifetime volume across the two books. The Baltimore moneyline leg alone accounts for roughly $10.5K of it.
When does the Orioles vs Athletics market resolve?
It resolves once the game goes final at Sutter Health Park on August 29, 2026, with first pitch scheduled for 10:05 PM ET. Watch the Athletics bullpen usage early, since a reliever is opening for them and the total sits on a near coin flip at 51c.