Colorado Rockies vs Arizona Diamondbacks Prediction Market Odds, August 11, 2026
| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
â–¶Rockies | +1.5 55%56% | O 1 55%55% | 38%39% | 39% Polymarket |
â–¶Diamondbacks | -1.5 45%44% | U 1 45%45% | 63%62% | 63% Kalshi |
| Spread | Total | Moneyline | Best ML | |
|---|---|---|---|---|
â–¶Colorado Rockies | +1.5 | O 1 | 39% Polymarket | |
â–¶Arizona Diamondbacks | -1.5 | U 1 | 63% Kalshi |
Arizona is the 61.5c home favorite for game two at Chase Field, priced at 62c on Kalshi and 61c on Polymarket against Colorado at 39c and 40c. The line has held from 63c on August 10, a drift of a single cent. The Diamondbacks are 63-56 overall and 35-25 at home; the Rockies are 46-72 and a league-worst 19-40 on the road. Rookie left-hander Mitch Bratt (1-1, 3.90 ERA) draws Tomoyuki Sugano (11-5, 4.51 ERA), and the total is priced right at 9.5 runs. Current prices for every line are on the live board above.
Arizona opens the second game of this series as the home favorite at Chase Field, and the market has treated the matchup as settled since it posted. The Diamondbacks sat at 63c on August 10 and are trading in the low 60s on August 11, a one-cent drift that qualifies as no movement at all. Kalshi and Polymarket are within a cent of each other on both sides, so there is no cross-platform disagreement worth acting on here. The whole board, moneyline plus run line plus totals plus the first-five-innings ladder, carries roughly $4.9K in cumulative volume, which is typical for a mid-August game between a contender and a last-place club.
Rockies vs Diamondbacks Market Context
Arizona enters at 63-56 overall and 35-25 at Chase Field, the record that does most of the work in this price. Colorado is 46-72 and 19-40 away from Denver, the worst road mark in the National League West and the reason the Rockies have been priced in the high 30s all week. The gap between a .529 team at home and a .322 team on the road is roughly what a 62c line implies, so the market is not making a call beyond the standings.
The pitching matchup is the part that is not obvious. Arizona hands the ball to Mitch Bratt, a rookie left-hander carrying a 1-1 record and a 3.90 ERA. Bratt came over from Texas in the Merrill Kelly trade and reached the majors on the strength of a Pacific Coast League ERA that led the circuit, but he works in the low 90s and lives in the strike zone, which is a profile that gets punished the third time through a lineup. Colorado counters with Tomoyuki Sugano at 11-5 with a 4.51 ERA. Sugano signed a one-year deal with the Rockies and has posted better run prevention than his 2025 season in Baltimore despite half his starts coming at Coors Field, which makes a road start at Chase Field one of his softer assignments.
The derivative markets say the same thing the moneyline does, only more precisely. The run line has Arizona at -1.5 near the mid-40s and Colorado at -1.5 in the high 20s, a spread that prices Arizona as a favorite without conviction in a blowout. The total sits right on 9.5 runs, with the over on 9.5 hovering at 48c and the over on 8.5 at 58c, which is the market putting the true number a shade under 10. Team totals split the same way: Arizona over 4.5 runs is priced in the mid-50s while Colorado over 4.5 runs is priced in the mid-40s, a one-run gap in expected offense rather than the three-run gap the records would imply. The first-five-innings ladder has over 4.5 runs at 60c and a run in the first inning at roughly 54c, both of which lean toward early scoring against two starters who allow contact.
Lineup context favors Arizona in the aggregate but not in the individual matchups. Ketel Marte leads the Diamondbacks with 20 home runs and 64 RBI, and Gabriel Moreno is hitting .302. Colorado is not short on production at the top: Hunter Goodman has 34 home runs and 69 RBI, more than any Arizona hitter, and Jake McCarthy is batting .306. Goodman against a rookie left-hander in a park that plays fair to right-handed power is the single at-bat most likely to move the in-game price.
When the Rockies vs Diamondbacks Market Resolves
The game is scheduled for 9:40 pm ET on August 11, 2026 at Chase Field in Phoenix. The moneyline resolves to the team that wins the game, with each winning contract paying $1 per share and the losing side settling at $0. The run line settles on the final margin, the total settles on combined runs scored by both teams, and the first-five-innings markets settle on the score after five complete innings. Rain delays do not void the contracts as long as the game reaches an official result on the scheduled date. A postponement or suspension moves settlement to each platform's rescheduling rules, and a game called before it becomes official is voided rather than graded.
Key Rockies vs Diamondbacks Catalysts
- Bratt's third time through: the rookie left-hander has a 3.90 ERA but a low-90s fastball and a strike-zone-first approach, so the Arizona bullpen usage in innings five and six is the swing factor.
- Sugano away from Coors: an 11-5 record with a 4.51 ERA understates the road version of him, and Chase Field is a friendlier assignment than his home starts.
- Goodman's power: 34 home runs and 69 RBI make him the most dangerous bat on the field regardless of which team is favored.
- Home and road splits: Arizona is 35-25 at Chase Field, Colorado is 19-40 away from Denver, and that split is the backbone of the 62c price.
- Total priced under 10: the over on 9.5 near 48c and the over on 8.5 near 58c put the market's true number between the two, so an early crooked number reprices the whole board.
- Cross-platform agreement: Kalshi and Polymarket are inside one cent on both moneyline sides, which means the price is well anchored rather than thin on one venue.
Related Rockies vs Diamondbacks Markets
Game one of this series is priced separately at Rockies vs Diamondbacks on August 10, and comparing the two boards shows how little the market changed between starts. Season-long context for both clubs lives on the Arizona Diamondbacks hub and the Colorado Rockies hub. For the rest of the slate and the full cross-platform board on every game, see MLB prediction markets and today's MLB games.
Resolution Criteria
Resolves to the team that wins the game between the Colorado Rockies and Arizona Diamondbacks, scheduled for 9:40 pm ET on August 11, 2026 at Chase Field in Phoenix. Each winning moneyline contract pays $1 per share and the losing side settles at $0. Run line contracts settle on the final margin of victory, total contracts settle on combined runs scored by both teams, and first-five-innings contracts settle on the score after five complete innings. Kalshi and Polymarket both grade off the official final score once the game is complete. If the game is delayed but still reaches an official result on the scheduled date, contracts grade normally. If it is postponed, suspended, or called before becoming official, settlement follows each platform rescheduling and void rules rather than grading to either side.
Key Factors
- Mitch Bratt (1-1, 3.90 ERA) is a rookie left-hander with a low-90s fastball, so Arizona bullpen usage in innings five and six is the swing factor
- Tomoyuki Sugano (11-5, 4.51 ERA) draws a road start at Chase Field, a softer park than his Coors Field home assignments
- Hunter Goodman (34 home runs, 69 RBI) is the most productive bat on the field and faces a left-handed starter
- Arizona is 35-25 at Chase Field while Colorado is 19-40 on the road, the split that anchors the 62c price
- The total sits between 8.5 and 9.5 runs, with the over on 9.5 near 48c and the over on 8.5 near 58c
- Kalshi and Polymarket agree within one cent on both moneyline sides, so the price is anchored rather than thin on one venue
What are the current Rockies vs Diamondbacks odds?
As of August 11, 2026, Arizona is 62c on Kalshi and 61c on Polymarket for an average of 61.5c, while Colorado is 39c on Kalshi and 40c on Polymarket. The line has moved one cent from the 63c Arizona price on August 10.
Who is favored in Rockies vs Diamondbacks on August 11, 2026?
Arizona is favored at roughly 62% implied probability. The Diamondbacks are 63-56 overall and 35-25 at Chase Field, while the Rockies are 46-72 overall and 19-40 on the road.
Where can I trade the Rockies vs Diamondbacks market?
The moneyline, run line, totals, and first-five-innings markets all trade on both Kalshi and Polymarket. The two venues are inside one cent of each other on the moneyline as of August 11, 2026.
Who are the probable starting pitchers?
Arizona starts rookie left-hander Mitch Bratt, who is 1-1 with a 3.90 ERA. Colorado starts Tomoyuki Sugano, who is 11-5 with a 4.51 ERA in his first season with the Rockies.
What are the run line and total for Rockies vs Diamondbacks?
Arizona at -1.5 runs is priced in the mid-40s and Colorado at -1.5 is priced in the high 20s. The total sits on 9.5 runs, with the over on 9.5 near 48c and the over on 8.5 near 58c.
What should I watch before the game resolves on August 11, 2026?
Watch how deep Bratt goes in his start, since Arizona bullpen innings are the main path to a Colorado upset. The first-five-innings market has over 4.5 runs near 60c and a run in the first inning near 54c, both of which reprice fast on an early crooked number.