Cardinals vs Yankees Prediction Market Odds, August 5, 2026
| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
▶Cardinals | — | O 1 47%42% | 44%42% | 44% Kalshi |
▶Yankees | — | U 1 53%58% | 60%59% | 60% Kalshi |
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New York is the 60c home favorite for the August 5, 2026 finale at Yankee Stadium, and Kalshi and Polymarket agree on that number to the cent. St. Louis prices at 41c on the blended read (42c Kalshi, 40c Polymarket) after taking the series opener 13-7 on August 3. The Yankees are 63-50 and second in the AL East, the Cardinals are 56-57 and fourth in the NL Central, and the starting pitching card is the reason this line is not wider: Kyle Leahy brings a 3.44 ERA into the start against Will Warren at 4.14. The live board above carries the current price on both books.
The Cardinals vs Yankees finale is priced as a modest home edge, not a mismatch. New York sits at 60c on both Kalshi and Polymarket, an exact cross-platform agreement that is rare on a daily baseball board, and St. Louis prices at 41c blended. New York is 13 games over .500 at 63-50 and St. Louis is one game under at 56-57, yet the two sides are only 19c apart on the moneyline, and the pitching matchup explains most of that compression.
Cardinals vs Yankees Market Context
New York enters at 63-50 overall and 26-24 at Yankee Stadium, second in the AL East and 3.5 games behind Tampa Bay. St. Louis is 56-57 overall but a better 28-25 on the road, fourth in the NL Central and 13.5 games behind Milwaukee. Both clubs went 2-3 across their previous five games, with the Cardinals arriving on a two-game winning streak and the Yankees on a loss. St. Louis leads this three-game interleague set 1-0 after a 13-7 win on August 3, so August 5 is either a series-clinching spot for the visitor or a rubber game if New York evens it the night before.
The moneyline is the only two-sided game market posted on this board, and it prices New York at 60c, or 60% implied. Kalshi and Polymarket both post 60c on the Yankees, so there is no cross-platform edge on the favorite. The underdog side does split: 42c on Kalshi against 40c on Polymarket. Kalshi's two legs sum to 102c, the standard 2c of exchange vig, while the Polymarket pair sums to exactly 100c, which makes Polymarket the cheaper fill for a Cardinals buyer at these prices.
There is no run line or game total posted here. The one alternative contract is the first-inning run market, and it carries the widest cross-platform gap on the page at 55c Kalshi against 41c Polymarket, an average of 48c. That 14c gap reads as a liquidity artifact rather than a genuine disagreement: Kalshi holds all $994 of the traded volume on that contract while the Polymarket leg has not traded at all, so 55c is the number with an actual book behind it.
Line movement has been narrow and one-directional. The Yankees opened at 59c on Kalshi on August 3, dipped to 57c overnight, and have since firmed to 60c. The Cardinals moved the other way, from 45c to 42c on Kalshi and from 44c to 40c on Polymarket. St. Louis winning the opener 13-7 did not push the finale price in its favor, which is the market weighting the starter and the venue over the previous night's box score.
Cardinals vs Yankees Pitching Matchup
Kyle Leahy (7-4, 3.44 ERA) is the Cardinals' probable starter and is the better arm on the card. Will Warren (8-5, 4.14 ERA) goes for New York. Both are right-handed. A 0.70 gap in ERA in the visitor's favor is the single clearest reason a 63-50 home club is only a 60c favorite over a 56-57 visitor.
The lineup card cuts the other direction. New York is without Aaron Judge, who is on the 60-day injured list, plus Giancarlo Stanton and Cody Bellinger on the 10-day list, and the rotation is down Carlos Rodon (15-day) and Clarke Schmidt (60-day). Ben Rice has absorbed the load with 31 home runs, 73 RBI, and a .263 average, and Cam Schlittler leads the staff at a 2.26 ERA with 171 strikeouts. St. Louis counters with Jordan Walker (22 home runs, 81 RBI) and Alec Burleson (.288), and lists only Ramon Urias and Max Rajcic on the 60-day injured list, making the Cardinals the healthier roster by a wide margin. Full season inventory for both clubs sits on the New York Yankees market page and the St. Louis Cardinals market page.
When the Cardinals vs Yankees Market Resolves
The market settles on the final score of the game scheduled for 7:05 PM ET on August 5, 2026 at Yankee Stadium in the Bronx. The winning team's contract pays $1 per share and the losing side settles at $0. Baseball has no draw, so exactly one of the two moneyline legs resolves YES. Kalshi lists the contract under the KXMLBGAME series and Polymarket carries the paired two-outcome version of the same question, and both settle once the game is official.
Key Cardinals vs Yankees Catalysts
- Starting pitching gap: Leahy at a 3.44 ERA against Warren at 4.14 is the reason the home side is capped near 60c.
- Yankees lineup availability: Judge on the 60-day list plus Stanton and Bellinger on the 10-day list removes three regulars from a 63-50 club.
- Cross-platform underdog pricing: the Cardinals cost 40c on Polymarket against 42c on Kalshi, a 2c edge for the buyer.
- First-inning divergence: 55c Kalshi against 41c Polymarket on the first-inning run contract, with all $994 of traded volume on the Kalshi side.
- Drift against the winner: St. Louis fell from 45c to 42c on Kalshi in the 24 hours after winning the opener 13-7.
- Standings stake: New York is 3.5 games behind Tampa Bay in the AL East, while St. Louis is 13.5 back in the NL Central and effectively playing for a wild card path.
Related Cardinals vs Yankees Markets
The league-wide board, including division and season-win contracts for both clubs, sits at MLB prediction markets. Every game priced for the same date, with live Kalshi and Polymarket quotes on each moneyline, is listed on today's MLB slate. For the broader cross-sport view, the baseball category hub aggregates every league we price, and the team pages linked above track each club's futures inventory as the trade deadline dust settles.
Resolution Criteria
Resolves to the team that wins the St. Louis Cardinals at New York Yankees game scheduled for 7:05 PM ET on August 5, 2026 at Yankee Stadium in the Bronx. The winning team's contract pays $1 per share and the losing team's contract settles at $0. Baseball games do not end in a draw, so exactly one of the two moneyline legs resolves YES once the game is official. Kalshi lists the contract under the KXMLBGAME series and Polymarket carries the paired two-outcome version of the same question. If the game is postponed or suspended, both platforms settle on the completed game per their published rules, and a game that is not completed within the platform's stated window is voided with positions refunded.
Key Factors
- Probable starters: Kyle Leahy (7-4, 3.44 ERA) for St. Louis against Will Warren (8-5, 4.14 ERA) for New York
- Yankees lineup availability with Aaron Judge on the 60-day injured list plus Giancarlo Stanton and Cody Bellinger on the 10-day list
- Cardinals moneyline is 2c cheaper on Polymarket (40c) than on Kalshi (42c) while the Yankees side is 60c on both books
- First-inning run market splits 55c Kalshi against 41c Polymarket, with all $994 of traded volume sitting on Kalshi
- Cardinals drifted from 45c to 42c on Kalshi in the 24 hours after winning the series opener 13-7
- Standings stake: Yankees 63-50 and 3.5 games behind Tampa Bay, Cardinals 56-57 and 13.5 back in the NL Central
What are the current Cardinals vs Yankees odds?
Ahead of the August 5, 2026 first pitch, New York is the 60c favorite on both Kalshi and Polymarket, and St. Louis prices at 41c blended (42c Kalshi, 40c Polymarket). The live board above carries the current quote.
Who is favored in Cardinals vs Yankees on August 5, 2026?
The Yankees, at 60c, or 60% implied probability. New York is 63-50 overall and 26-24 at Yankee Stadium, while St. Louis is 56-57 overall and 28-25 on the road.
Who are the probable starting pitchers for Cardinals vs Yankees?
St. Louis is set to start right-hander Kyle Leahy (7-4, 3.44 ERA) and New York is set to start right-hander Will Warren (8-5, 4.14 ERA). The 0.70 ERA gap in the visitor's favor is the main reason the home side is priced at only 60c.
Where can I trade the Cardinals vs Yankees market?
Both Kalshi and Polymarket price the August 5, 2026 game. Kalshi lists it under the KXMLBGAME series and holds the larger share of the roughly $1.5K in combined volume across the moneyline and the first-inning run contract.
When does the Cardinals vs Yankees market resolve?
It resolves when the game goes final on August 5, 2026 at Yankee Stadium, first pitch scheduled for 7:05 PM ET. The winning team pays $1 per share and the losing side settles at $0.
What should I watch before Cardinals vs Yankees first pitch?
Watch the Yankees lineup card given the Judge, Stanton, and Bellinger absences, and watch whether the 14c first-inning gap between Kalshi at 55c and Polymarket at 41c closes once the Polymarket leg trades.