Short Answer

Pittsburgh is likely to win its September 22 game against St. Louis, with the market pricing this outcome at 62.0%.

1. Market Behavior & Drivers

The market's increased probability for a St. Louis Cardinals victory appears driven by the announced probable pitchers. The Cardinals' starter, Andre Pallante, holds a superior record (12-7) and ERA (3.69) compared to the Pirates' expected pitcher, Jared Jones (4-6, 4.17 ERA). This statistical advantage on the mound is the most direct explanation for the price movement from 52% to 62%.
This trend contradicts early betting odds, which are reported to favor Pittsburgh. The teams' nearly identical season records (75-76 for St. Louis vs. 75-75 for Pittsburgh) otherwise suggest a more evenly matched contest. Trading volume increased substantially on September 22, the day of the game, indicating growing conviction in a Cardinals win as the start time approached.
  • Pittsburgh is favored given betting action, superior offense, and Oneil Cruz's contribution.
  • St. Louis's perfect 4-0 record at PNC Park supports its market probability.

Who Wins and Why

Outcome Market Model Why
Pittsburgh 62.0% 59.2% Pittsburgh is the betting favorite, enters with a four-game winning streak, and has a superior offensive profile.
St. Louis 39.0% 40.8% St. Louis holds a perfect 4-0 head-to-head record against Pittsburgh at PNC Park this season.

Current Context

The St. Louis Cardinals (75-76) are scheduled to play the Pittsburgh Pirates (75-75) at PNC Park on September 22, 2026, with the game beginning at 6:40 PM EDT [1][2]. Both teams, separated by only 0.5 games, hold the 4th and 3rd positions respectively in the NL Central standings entering this matchup [3].
Probable pitchers and early betting odds favor the Pirates. RHP Andre Pallante (12-7, 3.69 ERA) is the probable starter for the Cardinals, while RHP Jared Jones (4-6, 4.17 ERA) is expected to pitch for the Pirates [4][2]. Betting markets currently list the Pirates as -152 favorites, with the Cardinals at +125 [4]. The over/under for the total combined score is set at 7 runs [4]. Prediction markets for the outcome of this game are active as of September 20, 2026 [5].
Both teams manage significant late-season injuries to key players. Entering the game, both clubs are contending with notable player absences. The Cardinals are without Masyn Winn and Peter Strzelecki [6]. The Pirates' injured list includes Mitch Keller, Oneil Cruz, and Ryan O'Hearn [7].
Sources (7)
  1. 1Cardinals at Pirates, Probable Pitchers, Lineups, and more - MLB.commlb.com
  2. 2St. Louis Cardinals 2026 2nd Half MLB Schedule - ESPNespn.com
  3. 3St. Louis Cardinals Scores, Stats and Highlights - ESPNespn.com
  4. 4Cardinals vs. Pirates - Boxscore - Live Score - September 22, 2026 | FOX Sportsfoxsports.com
  5. 5St. Louis Cardinals vs. Pittsburgh Pirates Odds & Predictions (Sep...polymarket.com
  6. 6St. Louis Cardinals vs. Pittsburgh Pirates Live Coverage, Stats, and Updates - September 22, 2026 Gametracker - CBS Sportscbssports.com
  7. 7St. Louis Cardinals @ Pittsburgh Pirates: Live game updates, stats...sports.yahoo.com

2. Price Chart

Historical Price (Probability)

Outcome probability
Date

3. Market Data

Contract Snapshot

For the "Pittsburgh" market, a YES resolution is triggered if Pittsburgh wins the professional baseball game against St. Louis. A NO resolution occurs if Pittsburgh does not win the game (meaning St. Louis wins). This market begins on September 22, 6:40 PM EDT, and no special settlement conditions are explicitly stated, implying resolution is based on the game's final outcome.

Available Contracts

Market options and current pricing

Outcome bucket Yes (price) No (price) Last trade probability
Pittsburgh $0.62 $0.39 62%
St. Louis $0.39 $0.62 39%

Market Discussion

The September 22, 2026, game between the St. Louis Cardinals and Pittsburgh Pirates shows split market sentiment; sportsbooks generally favor Pittsburgh (moneyline approx. -132 to -158), while some statistical models lean towards St.

4. Trust Index

Octagon Trust Index Kalshi 83 Good
How it adds up
Integrity80% of score84Good
Trade quality20% of score81Good

Includes the cost to trade: a $10,000 order loses under 1% of the price to slippage.

Trust score83Good

Weighted blend with hard caps — a critically weak safety pillar, or a severe trading anomaly, caps the total regardless of the rest. Full methodology · About the Trust Index

Trust profile
Integrity4 screens run · 6 don't apply
Market integrity
83Good

Outcome is hard to influence

No suspicious activity on any screen

Screened clean
Large tradesNo single trade dominates the tape. Clear
Thin-volume movesMoves carried volume Clear
Size patternsNo distribution read Clear
2 screens not run
Outcome control · doesn't apply to this market type
Thin-leg conviction · doesn't apply to this market type
Info fairness
80Good

Structural prior — no screens apply

No suspicious activity on any screen

Screened clean
Information exposureNo concentrated group can know the outcome materially early. Clear
4 screens not run
Move vs. catalyst · doesn't apply to this market type
Longshot repricing · doesn't apply to this market type
Pre-broadcast certainty · doesn't apply to this market type
Cross-venue timing · doesn't apply to this market type
Resolution quality
92Strong

Resolution mechanism is dependable

No suspicious activity on any screen

Resolution rules read: Clear

Liquidity
86Deep

Size fills near the screen price

2 contracts · worst first

St. Louis83
Deep · high confidence

Typical bar range 2.4% of price over 7 traded bars

24h traded notional $5,975 · 24h
Pittsburgh87
Deep · high confidence

Quoted spread 1.6% of price with size at both touches (bar range 1.7%)

24h traded notional $17,645 · 24h
Move quality
70Stable

No significant moves

2 contracts · worst first

Pittsburgh—
No significant move (6h)

Price was stable over the last 6 hours.

St. Louis—
No significant move (6h)

Price was stable over the last 6 hours.

Rule clarity
95Clear

Counts toward Resolution quality, not here

2 contracts · worst first

Pittsburgh95
Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
St. Louis95
Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
Trade quality
81Good

Order book supports trading

Deep and tight enough to trade efficiently.

Outcome quality 86 (notional-weighted across 2 scored legs)

$100 order: 0.5c slippage (<1% of a 61.5c contract)

$1,000 order: 0.5c slippage (<1% of a 61.5c contract)

$10,000 order: 0.5c slippage (<1% of a 61.5c contract)

PittsburghPrimary87Market scoreLiquidity87Move quality–Rule clarity95
Why 87
Liquidity
87 · Deep · high confidence

Quoted spread 1.6% of price with size at both touches (bar range 1.7%)

24h traded notional $17,645 · 24h
Move quality
No significant move (6h)

Price was stable over the last 6 hours.

Rule clarity
95 · Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear
St. Louis83Market scoreLiquidity83Move quality–Rule clarity95
Why 83
Liquidity
83 · Deep · high confidence

Typical bar range 2.4% of price over 7 traded bars

24h traded notional $5,975 · 24h
Move quality
No significant move (6h)

Price was stable over the last 6 hours.

Rule clarity
95 · Clear · high confidence

Objective result from a trusted source (allowlist)

allowlist · Clear

underwriting_v1.4 · computed Sep 22, 2026

5. How do the 2026 season statistics of starting pitchers Andre Pallante and Jared Jones compare head-to-head?

Andre Pallante ERA3.45 (September 22, 2026) [1][2]
Jared Jones Strikeouts109 (September 22, 2026) [3][4][5]
Andre Pallante Win-Loss Record12-6 (September 22, 2026) [1][2]
Andre Pallante shows stronger win-loss performance and more innings pitched compared to Jared Jones as of September 22, 2026. St. Louis Cardinals starting pitcher Andre Pallante has recorded a 12-6 win-loss record with a 3.45 ERA, 102 strikeouts, and a 1.23 WHIP over 146.0 innings pitched [1][2]. In contrast, Pittsburgh Pirates starting pitcher Jared Jones, on the same date, holds a 2-6 record with an ERA ranging from 4.17 to 4.83, alongside 109 strikeouts and a 1.19 WHIP across 72.2 innings pitched [3][4][5]. This data indicates that Pallante has a significantly better win-loss record and has pitched considerably more innings than Jones.
Statistical comparisons reveal nuanced differences in performance metrics between the two pitchers. Pallante's 3.45 ERA is lower than Jones's reported ERA range of 4.17 to 4.83 [1][2][3][4][5]. However, Jones has accumulated 109 strikeouts in 72.2 innings pitched, surpassing Pallante's 102 strikeouts over 146.0 innings pitched [1][2][3][4][5]. Furthermore, Jones's 1.19 WHIP is slightly lower than Pallante's 1.23 WHIP [1][2][3][4][5].
Sources (5)
  1. 1Andre Pallante Stats: Statcast, Visuals & Advanced Metricsbaseballsavant.mlb.com
  2. 2Andre Pallante Stats, Height, Weight, Position, Rookie Status & Morebaseball-reference.com
  3. 3Jared Jones Stats, Height, Weight, Position, Rookie Status & Morebaseball-reference.com
  4. 4Jared Jones 2026 pitching Stats Per Game - MLB - ESPNespn.com
  5. 5Jared Jones - Pitching Game Logs | FanGraphs Baseballfangraphs.com

6. What recent performance trends support the Pittsburgh Pirates' status as betting favorites over the St. Louis Cardinals?

Pirates Moneyline-148 to -155 [1]
Pirates Overall Record79-77 [1][2]
Pirates Batting Average.263 [2]
Pittsburgh Pirates are favored due to superior overall performance. The betting market lists the Pirates with a moneyline ranging from approximately -148 to -155 for their September 22, 2026 game against the St. Louis Cardinals [1]. This favoritism stems from their stronger overall record and superior season-long offensive performance compared to the Cardinals [1][2]. Pittsburgh holds a 79-77 record, which is better than St. Louis's 76-80 record [1][2].
Statistical advantages reinforce the Pirates' status as betting favorites. The Pirates demonstrate a significant offensive advantage over St. Louis, with a higher batting average (.263 vs.241), more runs scored (538 vs 447), and a higher slugging percentage (.427 vs.385) [2]. Furthermore, the game is scheduled at PNC Park, where the Pirates benefit from a home-field advantage, evidenced by their 27-24 home record compared to the Cardinals' 25-23 away record [2].
Sources (2)
  1. 1Pirates vs Cardinals Prediction, Odds, Moneyline, Spread & Over...fanduel.com
  2. 2Cardinals vs. Pirates (Sep 22, 2026) Live Score - ESPNespn.com

7. How might late-season injuries to key players like Masyn Winn and Oneil Cruz affect the outcome of the September 22 game?

Masyn Winn Status (Sept 22, 2026)Sidelined or compromised due to fractured left thumb [1][2][3][4]
Masyn Winn InjuryFractured left thumb, multiple IL stints (Aug/Sept 2026) [1]
Oneil Cruz StatusActivated mid-August 2026, active and playing in September [5][6]
St. Louis Cardinals shortstop Masyn Winn is significantly impacted by a fractured left thumb. This ongoing injury has resulted in multiple placements on the injured list throughout August and early September 2026, and also led to a lineup scratch in early September [1][2][3]. As of September 22, 2026, his continued compromised status indicates he will not be a full contributor for the Cardinals in their upcoming game [4].
Pittsburgh Pirates center fielder Oneil Cruz has successfully returned from his injury. He was activated from the 60-day injured list in mid-August 2026 and has been an active player for the Pirates throughout September [5]. Notably, Cruz delivered a strong performance on September 1, 2026, recording four hits and four RBIs [6]. Consequently, Cruz is available and has demonstrated recent strong performance leading up to the September 22 game.
Sources (6)
  1. 1Cardinals Make Sudden Lineup Change, Scratch Masyn Winnsi.com
  2. 2Masyn Winn - MLB News, Rumors, & Updates | FOX Sportsfoxsports.com
  3. 3Masyn Winn placed on injured list; Nolan Gorman recalled - MLB.commlb.com
  4. 4Starting shortstop Masyn Winn remains on the injured list Monday as...facebook.com
  5. 5Oneil Cruz returning from 60-day injured list - MLB.commlb.com
  6. 6Oneil Cruz's four RBIs, four hits | 09/01/2026 | Pittsburgh Piratesmlb.com

8. What is the head-to-head record between the Cardinals and Pirates during the 2026 season, particularly in games played at PNC Park?

Overall Head-to-Head RecordSt. Louis Cardinals 6-4 vs. Pittsburgh Pirates (2026 MLB season) [1][2][3][4]
PNC Park RecordCardinals 4-0 vs. Pirates at PNC Park (2026 MLB season) [1][2][3]
Completed Games10 completed games (2026 MLB season) [1][2][3][4]
The Cardinals dominated the Pirates at PNC Park in 2026. Across ten completed games during the 2026 MLB season, the St. Louis Cardinals held a 6-4 head-to-head advantage over the Pittsburgh Pirates. Notably, the Cardinals maintained an undefeated record when playing at PNC Park, securing victories in all four contests against the Pirates at their home stadium [1][2][3].
The Cardinals secured a four-game sweep at PNC Park in April. From April 27-30, 2026, the St. Louis Cardinals swept a four-game series against the Pirates at PNC Park with scores of 4-2, 11-7, 5-4, and 10-5 [1][2][3]. In contrast, the teams played two three-game series in St. Louis, where the Pirates had more success. In a May 19-21 series, the Cardinals won one game (9-6) while the Pirates won two (7-0, 6-2) [4]. Similarly, during an August 28-30 series, the Cardinals won one game (4-1) and the Pirates won two (6-2, 5-4) [4]. As of September 22, 2026, a new three-game series is scheduled to commence at PNC Park; however, outcomes beyond these initial ten games are not included in the provided information [5][6].
Sources (6)
  1. 1Cardinals 10-5 Pirates (Apr 30, 2026) Final Score - ESPNespn.com
  2. 2Cardinals 11-7 Pirates (Apr 28, 2026) Final Score - ESPNespn.com
  3. 3Cardinals 5-4 Pirates (Apr 29, 2026) Video Highlights - ESPNespn.com
  4. 4Cardinals Vs Pirates Last 20 Games Head To Head - StatMusestatmuse.com
  5. 5Pittsburgh Pirates vs St. Louis Cardinals History - Champs or Chumpschampsorchumps.us
  6. 62026 MLB Games: Cardinals Pirates Matchup Stats - TeamRankings.comteamrankings.com

9. Which team holds the advantage in key offensive categories during the second half of the 2026 season?

Cardinals Strikeouts per game7.91 [1]
Pirates Runs per game4.62 [1]
Pirates Doubles per game1.79 [1]
The St. Louis Cardinals show efficiency, while the Pittsburgh Pirates lead in power and run production. The Cardinals hold a slight advantage in offensive efficiency metrics such as strikeouts and sacrifice flies per game. Conversely, the Pirates lead in raw power and run production metrics, including runs and doubles per game [1]. As of September 22, 2026, the Cardinals averaged 7.91 strikeouts per game compared to 9.17 for the Pirates, and recorded 0.35 sacrifice flies per game versus 0.25 for the Pirates. The Pirates, however, averaged 4.62 runs per game compared to 4.51 for St. Louis, and averaged 1.79 doubles per game while the Cardinals averaged 1.45 [1].
Despite earlier struggles, the Pirates entered the matchup on a strong winning streak. While the Pirates experienced offensive struggles during the second half of the 2026 season, they entered the September 22, 2026, matchup on a four-game winning streak, which was described as their best baseball of the second half [2].
Sources (2)
  1. 12026 MLB Games: Cardinals Pirates Matchup Stats - TeamRankings.comteamrankings.com
  2. 2St. Louis Cardinals at Pittsburgh Pirates - Where to Watch, Stream...fubo.tv

10. What Could Change the Odds

Key Catalysts

The St. Louis Cardinals (75-76) are scheduled to face the Pittsburgh Pirates (75-75) on September 22, 2026 [1][2]. The pitching matchup features Andre Pallante (12-7, 3.70 ERA) for St. Louis against Jared Jones (4-6, 4.17 ERA) for Pittsburgh [3][4][2]. Betting markets show the Pittsburgh Pirates favored with moneyline odds generally ranging between -148 and -155, while the St. Louis Cardinals are underdogs at +125 to +126 [5][6][7][4]. The total runs line is set at 7 or 7.5, with market movement toward the under due to the recent dominant pitching performance of Jared Jones [5][6][4].
Despite roughly 83 percent of public moneyline tickets favoring Pittsburgh, the betting line has remained relatively steady, which some analysts interpret as potential sharp action on the Cardinals [4]. Prediction markets on Polymarket were active for the STL vs. PIT game as of September 20, 2026, allowing traders to incorporate real-time information such as lineup changes and injury updates into the odds [8].

Key Dates & Catalysts

  • Expiration: September 25, 2026
  • Closes: September 25, 2026
Sources (8)
  1. 1Cardinals vs. Pirates (Sep 22, 2026) Live Score - ESPNespn.com
  2. 2St. Louis Cardinals 2026 2nd Half MLB Schedule - ESPNespn.com
  3. 3St. Louis Cardinals at Pittsburgh Pirates - Game Time, TV Channel and Probable Pitchersmlbschedule.net
  4. 4Cardinals vs Pirates Prediction Sept. 22: Is Pittsburgh at Home the Best Bet? - TheSpread.comthespread.com
  5. 5Pirates vs Cardinals Prediction, Odds, Moneyline, Spread & Over/Under for Sept. 22 | FanDuel Researchfanduel.com
  6. 6Cardinals vs Pirates Prediction, Odds & Player Prop Bets Today - MLB, Sep. 22sports.betmgm.com
  7. 7Cardinals vs. Pirates Prediction, Odds & Picks (Sep 22) | SportsGridsportsgrid.com
  8. 8St. Louis Cardinals vs. Pittsburgh Pirates Odds & Predictions (Sep...polymarket.com

12. Historical Resolutions

Historical Resolutions: 20 markets in this series

Outcomes: 10 resolved YES, 10 resolved NO

Recent resolutions:

  • KXMLBGAME-26SEP212145MINSF-SF: YES (Sep 22, 2026)
  • KXMLBGAME-26SEP212145MINSF-MIN: NO (Sep 22, 2026)
  • KXMLBGAME-26SEP211840WSHDET-WSH: NO (Sep 22, 2026)
  • KXMLBGAME-26SEP211840WSHDET-DET: YES (Sep 22, 2026)
  • KXMLBGAME-26SEP211835TORBAL-TOR: NO (Sep 22, 2026)