Mariners vs Dodgers Prediction Market Odds, July 30, 2026
| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
â–¶Mariners | +1.5 58%69% | O 1 51% | 41%41% | 41% Kalshi |
â–¶Dodgers | -1.5 42%31% | U 1 49% | 59%60% | 60% Polymarket |
| Spread | Total | Moneyline | Best ML | |
|---|---|---|---|---|
â–¶Seattle Mariners | +1.5 | O 1 | 41% Kalshi | |
â–¶Los Angeles Dodgers | -1.5 | U 1 | 60% Polymarket |
Los Angeles is the 59.5c favorite (60c Kalshi, 59c Polymarket) over Seattle at 41.5c in the finale of a three-game set at Dodger Stadium, a price that lands within a point of ESPN's 60.3% model projection. The Dodgers are 67-40 and own a 99c grip on the NL West, but they lost the series opener 7-6 to a 53-55 Seattle club and hand the ball to Roki Sasaki (4-5, 4.71 ERA), the higher ERA of the two listed starters. The live board above carries current Kalshi and Polymarket prices on the moneyline, the run line, and the 8.5 total.
Seattle at Los Angeles closes a three-game interleague set at Dodger Stadium on Thursday, July 30, 2026, first pitch 7:10 PM PT. The moneyline is one of the tightest cross-platform prices on the board: Kalshi has the Dodgers at 60c and Polymarket at 59c, a 1c gap with nothing to arbitrage between the venues. Seattle prices at 42c on Kalshi and 41c on Polymarket after taking the opener 7-6 on July 28.
Mariners vs Dodgers Market Context
Los Angeles enters at 67-40 and first in the NL West, where its division market has already been marked to 99c. The home split is the weaker one at 31-20 against 36-20 on the road, so the 60c home price is not a Dodger Stadium premium. Seattle is 53-55, third in the AL West and 23-32 away from T-Mobile Park, with its playoff market at 61c and its division price at 35c. Recent form is a wash: the Dodgers went 3-2 across their previous five, the Mariners 2-3.
The run line reads the game the same way the moneyline does. Dodgers -1.5 sits at 41c on both books, which nets against the 59.5c moneyline to roughly 18.5c on a one-run Los Angeles win. Seattle -1.5 is 30.5c against a 41.5c moneyline, or about 11c on a one-run Seattle win. Added together, the board is pricing close to 30% that this is decided by a single run, which is why the run line is the more efficient expression of a Dodgers opinion than the moneyline.
The total is the flattest market on the page. Over 8.5 runs trades at 51c on Kalshi and 51c on Polymarket, a true coin flip that matches the 8.5 number posted at the sportsbooks. The ladder steps down cleanly from there: Over 7.5 at 59c, Over 9.5 at 41c, Over 10.5 at 34c. Team totals split the same way the moneyline does, with Los Angeles over 4.5 runs at 51c against Seattle over 4.5 runs at 43c, an implied one-run edge to the home lineup.
Cross-platform divergence is close to nonexistent on the main lines and only surfaces in the first-five-innings ladder. Over 3.5 runs through five innings is 67c on Kalshi against 64c on Polymarket, and over 2.5 runs through five is 80c against 77c. Those two 3c gaps are the only prices on this board where one venue is materially cheaper, and Polymarket is the better side of the Over in both cases.
Movement has been minimal. The Dodgers moneyline opened the session at 59c on Kalshi and firmed to 60c on roughly $36K of Kalshi volume, while Polymarket drifted the Mariners side from 42c to 41c. A 1c band in both directions is a line that has held, and the moneyline is the deepest book on the page by a wide margin, with about $11K on the Polymarket side against low four-figure volume on most derivatives.
Mariners vs Dodgers Pitching Matchup
Roki Sasaki (4-5, 4.71 ERA) starts for Los Angeles, and the market is not paying for him. The Dodgers are a 59.5c favorite while running out the higher ERA of the two listed starters, which prices the lineup and the bullpen rather than the arm. ESPN lists Bryan Woo (7-7, 4.37 ERA) as Seattle's probable, while pre-series rotation projections had Bryce Miller (4-5, 2.75 ERA) in the finale, so the Seattle half of the card is the one input that has shifted during the series.
Sasaki's strikeout props are the most legible read on the pitching matchup. Polymarket prices over 3.5 strikeouts at 62c, over 4.5 at 55c, and over 5.5 at 26c. The 29c drop between the 4.5 and 5.5 rungs prices a short outing, which fits a Los Angeles staff carrying Blake Snell, Ben Casparius, Bobby Miller, and Gavin Stone on the 60-day injured list and Blake Treinen on the 15-day. The relievers, not the starter, are what a 60c favorite price is buying here. The home run props on the board are Polymarket-only and thinly quoted, so the strikeout ladder is the prop worth reading.
The lineups are where the gap actually is. Shohei Ohtani leads Los Angeles with 23 home runs, Freddie Freeman is hitting .299, and Andy Pages has driven in 69 runs. Seattle counters with Dominic Canzone (18 home runs, 49 RBI) and Randy Arozarena (.281), with Brendan Donovan on the 10-day injured list and reliever Matt Brash on the 15-day. Conditions are neutral: 80 degrees at first pitch, no precipitation, 8 mph gusts.
When the Mariners vs Dodgers Market Resolves
The game is scheduled for 7:10 PM PT on Thursday, July 30, 2026, at Dodger Stadium, and every market on the board settles off the final score that night. The moneyline resolves to the winning team, the run line to the final margin, and the total to combined runs, with extra innings counting toward both. First-five-innings markets settle on the score after the top and bottom of the fifth, independent of the final result. Kalshi and Polymarket both grade from the official box score, so settlement usually lands within an hour of the last out.
Key Mariners vs Dodgers Catalysts
- Sasaki workload: Roki Sasaki (4-5, 4.71 ERA) starts for Los Angeles, and his strikeout ladder (62c over 3.5, 55c over 4.5, 26c over 5.5) prices a short outing.
- Seattle probable: ESPN lists Bryan Woo (7-7, 4.37 ERA) while pre-series projections had Bryce Miller (4-5, 2.75 ERA); the confirmed name changes the total more than the moneyline.
- Dodgers bullpen load: Blake Snell, Ben Casparius, Bobby Miller, and Gavin Stone are on the 60-day injured list with Blake Treinen on the 15-day, so the 60c price rests on a thinned relief corps.
- Cross-platform gap: the first-five-innings Over 3.5 is 64c on Polymarket against 67c on Kalshi, the only 3c mispricing on the board.
- Coin-flip total: Over 8.5 runs is 51c on both venues in 80-degree, precipitation-free conditions, leaving the total with no directional lean.
- Standings stake: Seattle is 53-55 and third in the AL West at 35c, so a series-finale win at Dodger Stadium carries real weight on its 61c playoff price.
Related Mariners and Dodgers Markets
The Dodgers carry the shortest price in the MLB World Series market at 34.5c across a board that has traded more than $75M, which is the cleanest read available on how the market weights this roster beyond a single July game. Seattle's season resolves through the AL West division market, where it prices second at 35c behind Texas at 40c. For the rest of the day's slate and the league-wide futures, the baseball hub collects every active Kalshi and Polymarket board in one place.
Resolution Criteria
The moneyline resolves to the team that wins the game at Dodger Stadium on Thursday, July 30, 2026, with first pitch scheduled for 7:10 PM PT. Each winning team contract pays $1 per share and the losing side settles at $0. The run line settles on the final margin, so Los Angeles at -1.5 requires a win by two or more runs and Seattle at -1.5 requires the same. The total settles on combined runs scored by both teams, with Over 8.5 requiring nine or more; extra innings count toward both the total and the run line. First-five-innings markets settle on the score at the end of the fifth inning regardless of the final result, and team totals settle on that team's individual run count. If the game is postponed, suspended before it becomes official, or otherwise not completed on the scheduled date, Kalshi and Polymarket each apply their own postponement rules, which generally void or roll the market rather than grade it on a partial score.
Key Factors
- Roki Sasaki (4-5, 4.71 ERA) starts for Los Angeles, with strikeout props at 62c over 3.5 and 26c over 5.5 pricing a short outing
- Seattle probable unsettled: ESPN lists Bryan Woo (7-7, 4.37 ERA), pre-series projections had Bryce Miller (4-5, 2.75 ERA)
- Dodgers pitching attrition: Blake Snell, Ben Casparius, Bobby Miller and Gavin Stone on the 60-day IL, Blake Treinen on the 15-day
- First-five-innings Over 3.5 is 3c cheaper on Polymarket (64c) than Kalshi (67c), the only material cross-platform gap on the board
- Total of 8.5 priced as a coin flip (Over at 51c on both venues) in 80-degree, precipitation-free conditions
- Seattle at 53-55 and third in the AL West, with its playoff market at 61c and its division price at 35c
What are the current Mariners vs Dodgers odds?
As of July 30, 2026, Los Angeles is the 59.5c favorite on the cross-platform average (60c on Kalshi, 59c on Polymarket) and Seattle trades at 41.5c (42c Kalshi, 41c Polymarket). The total is 8.5 runs with the Over at 51c on both venues.
Who is favored in Mariners vs Dodgers on July 30, 2026?
The Dodgers, at roughly 60% implied probability. ESPN's matchup model puts Los Angeles at 60.3% and DraftKings posted the Dodgers at -156, so the prediction markets, the model, and the sportsbook all land within about a point of each other.
Where can I trade the Mariners vs Dodgers market?
Both Kalshi and Polymarket list the game. Kalshi carries the moneyline, run line, full-game and first-five-innings totals, and team totals; Polymarket carries the moneyline, the total, and the player props, including the Roki Sasaki strikeout lines.
When does the Mariners vs Dodgers market resolve?
It resolves on the final score of the game, scheduled for 7:10 PM PT on Thursday, July 30, 2026, at Dodger Stadium. Contracts settle on both platforms once the game goes final, and a postponed or suspended game is handled under each platform's own postponement rules.
What should I watch before the Mariners vs Dodgers market resolves?
The confirmed Seattle starter is the open item, with ESPN listing Bryan Woo (7-7, 4.37 ERA) against a pre-series projection of Bryce Miller (4-5, 2.75 ERA). The other spot to watch is the first-five-innings Over 3.5, priced 64c on Polymarket against 67c on Kalshi as of July 30, 2026.