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St. Louis Cardinals at Arizona Diamondbacks

MLBregular • 2026 Season
completed
Diamondbacks logo
Diamondbacks
Arizona
5
vs
Cardinals logo
Cardinals
St. Louis
3
ARI 55%45% STL
Prediction Confidence:
Moderate

Arizona Diamondbacks 55% to win. The biggest signal favoring Diamondbacks:

  • Home Field Advantage. Base home field advantage applied (no detailed stats available)

What would change the call

Win probability as of kickoff if a leading factor were even

  • If the home-field edge were neutral: ARI 52% (−3)

Win probability movement

ARI home win probability as the model updated before the game

Home win probability movement60%55%50%Jul 15Jul 18

Labels mark updates of 5 points or more, named by the factor that moved most.

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VenueChase Field
Phoenix, Arizona

Team Comparison

Head-to-head snapshot based on our model inputs

Cardinals (away)
Diamondbacks (home)
45%
Win probability
55%
0
High-impact factors
0
0
Players ruled out
0

Post-Game Analysis

How our model performed

The Diamondbacks defeated the Cardinals 5-3.

Our model predicted the Diamondbacks would win with 55% confidence -- and they delivered. A close call, but the model's slight lean proved correct.

Looking at the factors our model weighed:

  • Home Field Advantage favored the Diamondbacks and was a notable factor: Base home field advantage applied (no detailed stats available)
  • Injuries was neutral and a contributing factor: Similar injury situations: Diamondbacks (0 out) vs Cardinals (0 out)
  • Rest Days was neutral and a contributing factor: Similar rest: Diamondbacks (back-to-back) vs Cardinals (back-to-back)

This analysis was generated from our model's pre-game assessment compared against the actual result. Factor accuracy helps improve future predictions.

Diamondbacks won 5-3

Diamondbacks won in a close game

Prediction CorrectWe predicted Diamondbacks at 55%

Key Factors

What's driving the win probability for this game

  • Home Field AdvantageFavors Arizona Diamondbacks
  • InjuriesNeutral
  • Rest DaysNeutral
  • Weather ImpactNeutral
  • ELO RatingNeutral
  • Offensive EfficiencyNeutral
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What's Driving This Game

Each factor's contribution to the final win probability

STL
ARI
Home Field Advantage
Favours STL|Favours ARI

Premium feature: factor breakdown

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Understanding the win probability calculation

1 factor not shown (insufficient data)

Model version: 1.1.0 • Calculated: 7/18/2026, 8:00:04 PM

Key Players

Cardinals

Hunter DobbinsSP
Michael McGreevySP
Chase HamptonSP
Kyle LeahySP
Andre PallanteSP

Diamondbacks

Merrill KellySP
Michael SorokaSP
Ryne NelsonSP
Eduardo RodriguezSP
Zac GallenSP

Learn About Our Analysis

Learn about the factors behind our predictions

Frequently Asked Questions

Diamondbacks has a 55% win probability, while Cardinals has a 45% win probability based on our analysis.

Our model considers weather conditions, offensive and defensive efficiency, rest days, injury impact, and historical performance.

This game is being played at Chase Field in Phoenix, Arizona.

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