Colorado Rockies vs St. Louis Cardinals Prediction Market Odds, August 8, 2026
| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
â–¶Rockies | +1.5 59%59% | O 8.5 54%53% | 31%31% | 31% Kalshi |
â–¶Cardinals | -1.5 41%41% | U 8.5 46%47% | 36%36% | 36% Kalshi |
| Spread | Total | Moneyline | Best ML | |
|---|---|---|---|---|
â–¶Colorado Rockies | +1.5 | O 8.5 | 31% Kalshi | |
â–¶St. Louis Cardinals | -1.5 | U 8.5 | 36% Kalshi |
St. Louis is the 59.5c moneyline favorite (60c Kalshi, 59c Polymarket) over Colorado at Busch Stadium, with the Rockies at 41c on both books. The Cardinals enter 58-58 and 29-32 at home; the Rockies are 45-71 and 18-38 on the road, and they hand the ball to Kyle Freeland (6.81 ERA) against Matthew Liberatore (4.97 ERA). The market total sits near 8.7 runs. First pitch is 7:15pm ET on Saturday, August 8, 2026, and the live board above carries current prices.
St. Louis is the 59.5c favorite (60c Kalshi, 59c Polymarket) against Colorado at Busch Stadium, a price that gives the Cardinals roughly a 59% chance in a game they enter at 58-58 against a 45-71 opponent. The Rockies trade at 41c on both books. First pitch is 7:15pm ET on Saturday, August 8, 2026, and the live board above carries the current cross-platform prices on the moneyline, the run line, and the total.
Rockies vs Cardinals Market Context
The standings gap is the widest input on this board and the market has compressed it. St. Louis is 58-58 overall, 29-32 at home, and 4-6 across its last 10 games. Colorado is 45-71 overall, 18-38 on the road, and 3-7 across its last 10. That is a 13-game separation in the win column translated into an 18.5c moneyline gap, which is a modest number for a matchup this lopsided on paper. The Cardinals' sub-.500 home mark is doing most of the work holding the price under 62c.
Pitching is the second input and it cuts the same way. Colorado sends Kyle Freeland (3-10, 6.81 ERA), St. Louis counters with Matthew Liberatore (5-8, 4.97 ERA). Nearly two full runs of ERA separate the starters, which is the clearest edge the Cardinals hold on the night. Liberatore's own 4.97 mark is why the market has not pushed St. Louis into the high 60s: this is a favorite priced off the opponent's weakness rather than off its own starter's form.
The lineups are close to even in top-end production. Hunter Goodman leads Colorado with 33 home runs and 66 RBI, and Jake McCarthy carries the highest average on the roster at .293. Jordan Walker leads St. Louis with 22 home runs and 81 RBI, with Alec Burleson hitting .287. Goodman's 33 homers are the single largest power number on either side, and the Rockies team-total market reflects that: Colorado over 4.5 runs trades at 43c against 52c for St. Louis over the same threshold, a 9c gap rather than the blowout separation the records would suggest.
Cross-platform, the two books agree. Kalshi has St. Louis at 60c and Polymarket at 59c, a 1c spread that sits inside normal quoting noise, and the Rockies are 41c on both venues. The difference is depth, not price: the Kalshi Cardinals moneyline has traded about $6.8K in lifetime volume against roughly $313 across the entire Polymarket moneyline pair. Polymarket is the marginally cheaper Cardinals ticket at 59c; Kalshi is where the size is.
The line has held. St. Louis printed 60c on every Kalshi snapshot through the overnight window and Colorado printed 41c across 13 consecutive Polymarket snapshots, with no directional move in either book. A flat line into a Saturday evening start means the confirmed probables were already in the price, so the movement to watch is the late scratch or the weather delay, not a drift that has already happened.
Rockies vs Cardinals Run Line and Total
The run line prices a tight game. St. Louis at -1.5 trades at 41c and Colorado at -1.5 trades at 31c; extend to -2.5 and the Cardinals fall to 31c with the Rockies at 23c. The 18.5c distance between the Cardinals moneyline (59.5c) and Cardinals -1.5 (41c) implies roughly a 19% chance St. Louis wins by exactly one run, which is a normal share for a home favorite in this band and confirms the board is internally consistent rather than mispriced across its own legs.
The total sits just under 9. Over 9.5 trades at 42.5c (42c Kalshi, 43c Polymarket) while over 8.5 sits at 53c, which places the market's implied game total near 8.7 runs. The first-five-innings market agrees: over 4.5 runs in the first five is 56c and over 5.5 is 44.5c, so the market expects roughly 4.7 runs before the bullpens take over. A run in the first inning is a coin flip at 52.5c (53c Kalshi, 52c Polymarket).
Polymarket also carries a three-way after-five market that the Kalshi board does not mirror: St. Louis leading after five at 46c, Colorado leading at 36c, and a tie at 14c. That set is the cleanest read on how the market splits the starters. The Cardinals hold only a 10c edge through five innings against an 18.5c edge over the full nine, which is the market saying the Cardinals' bullpen advantage, not Liberatore, is where the favorite earns its price. For broader league pricing across every game on the slate, the MLB market hub carries the full board.
When the Rockies vs Cardinals Market Resolves
The moneyline resolves to the team that wins the game at Busch Stadium on Saturday, August 8, 2026, with a scheduled 7:15pm ET first pitch. The run line settles on the final margin (a team at -1.5 pays only if it wins by two runs or more), and the total settles on combined runs scored by both clubs at the final out. First-five-innings and after-five markets settle on the score at the end of the fifth inning under each platform's official-game rules. A postponement moves settlement to the completed makeup date; a game called before it becomes official voids and refunds per platform rules.
Key Rockies vs Cardinals Catalysts
Starting pitching gap: Kyle Freeland's 6.81 ERA against Matthew Liberatore's 4.97 is the largest single input in the 59.5c price.
Colorado road form: the Rockies are 18-38 away from Coors Field, a .321 road win rate that is the structural case for the Cardinals number.
St. Louis home softness: the Cardinals are 29-32 at Busch Stadium and 4-6 in their last 10, which is why the favorite sits under 62c rather than in the high 60s.
Hunter Goodman's power: 33 home runs and 66 RBI make Colorado over 4.5 runs at 43c the live counter to the moneyline read.
Cross-platform depth split: Kalshi carries roughly $6.8K on the Cardinals moneyline against about $313 total on Polymarket, so Kalshi is the price signal and Polymarket the 1c-cheaper ticket.
Flat overnight line: St. Louis held 60c on Kalshi across every snapshot in the window, leaving a late scratch or weather as the only movement catalyst left.
Related Rockies vs Cardinals Markets
The Colorado Rockies team hub and the St. Louis Cardinals team hub track every market on each club, including season win totals and playoff qualification. The MLB league hub lists every game on the slate with live Kalshi and Polymarket prices side by side, and the baseball category extends the same board to the rest of the sport. For the previous meeting in this series, the Rockies at Cardinals market from August 7 shows how the same matchup was priced a day earlier.
Resolution Criteria
The moneyline resolves to the team that wins the game at Busch Stadium in St. Louis on Saturday, August 8, 2026, scheduled for a 7:15pm ET first pitch. Each winning contract pays $1 per share and the losing side settles at $0. Run line contracts settle on the final margin, so a team at -1.5 pays only on a win by two or more runs, and total contracts settle on combined runs scored by both teams at the final out. First-five-innings and after-five markets settle on the score at the end of the fifth inning. If the game is postponed, settlement moves to the completed makeup date; if it is called before reaching official-game length, contracts void and refund under each platform rulebook.
Key Factors
- Kyle Freeland (3-10, 6.81 ERA) vs Matthew Liberatore (5-8, 4.97 ERA) is the largest input in the 59.5c favorite price
- Colorado is 18-38 on the road, the structural case behind the Cardinals moneyline
- St. Louis is 29-32 at home and 4-6 in its last 10, capping the favorite under 62c
- Hunter Goodman (33 HR, 66 RBI) keeps Colorado over 4.5 runs live at 43c
- Kalshi carries about $6.8K on the Cardinals moneyline vs roughly $313 on Polymarket, a depth split rather than a price split
- The line held flat at 60c Kalshi and 41c Polymarket overnight, leaving a late scratch or weather as the remaining catalyst
What are the current Rockies vs Cardinals odds?
As of August 8, 2026, St. Louis is the 59.5c favorite (60c on Kalshi, 59c on Polymarket) and Colorado trades at 41c on both platforms. That implies roughly a 59% chance the Cardinals win.
Who is favored in Rockies vs Cardinals on August 8, 2026?
The Cardinals are favored at 59.5c, an implied 59% win probability. Colorado at 41c is the underdog despite Hunter Goodman leading the game with 33 home runs.
Who are the probable starting pitchers?
Colorado starts Kyle Freeland (3-10, 6.81 ERA) and St. Louis starts Matthew Liberatore (5-8, 4.97 ERA). The near two-run ERA gap is the main reason the Cardinals are priced at 59.5c.
What is the Rockies vs Cardinals run total?
Over 9.5 runs trades at 42.5c and over 8.5 trades at 53c, placing the implied game total near 8.7 runs. Over 4.5 runs in the first five innings sits at 56c as of August 8, 2026.
Where can I trade the Rockies vs Cardinals market?
Both Kalshi and Polymarket list the moneyline, the run line, and the total. Kalshi carries the depth at roughly $6.8K on the Cardinals side, while Polymarket has the Cardinals 1c cheaper at 59c.
What should I watch before first pitch?
The line held flat at 60c Kalshi through the overnight window, so a late scratch to Freeland or Liberatore and St. Louis weather are the only realistic movers before the 7:15pm ET start on August 8, 2026.