PlayDecoded
Menu

Kansas City Royals at Seattle Mariners

MLBregular • 2026 Season
completed
Mariners logo
Mariners
Seattle
6
vs
Royals logo
Royals
Kansas City
7
SEA 57%43% KC
Prediction Confidence:
Moderate

Seattle Mariners 57% to win. The top 2 signals favoring Mariners:

  • Home Field Advantage. Base home field advantage applied (no detailed stats available)
  • Rest Days. Mariners rest advantage (2 days rest) over Royals (1 day rest)

What would change the call

Win probability as of kickoff if a leading factor were even

  • If the home-field edge were neutral: SEA 54% (−3)
  • If the rest edge were neutral: SEA 56% (−1)

Win probability movement

SEA home win probability as the model updated before the game

Home win probability movement62%56%50%Apr 28May 1

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

Make Your Prediction

View leaderboard to see rankings

VenueT-Mobile Park
Seattle, Washington

Team Comparison

Head-to-head snapshot based on our model inputs

Royals (away)
Mariners (home)
43%
Win probability
57%
0
High-impact factors
0
0
Players ruled out
0

Post-Game Analysis

How our model performed

The Royals defeated the Mariners 7-6.

Our model predicted the Mariners would win with 57% confidence, but the Royals won against the model's expectation. Results like this help us refine the model.

Looking at the factors our model weighed:

  • Home Field Advantage favored the Mariners and was a notable factor: Base home field advantage applied (no detailed stats available)
  • Rest Days favored the Mariners and was a contributing factor: Mariners rest advantage (2 days rest) over Royals (1 day rest)
  • Defensive Efficiency was neutral and a contributing factor: No defensive stats available for comparison

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

Royals won 6-7

Royals won in a close game

Prediction IncorrectWe predicted Mariners at 57%

Key Factors

What's driving the win probability for this game

  • Home Field AdvantageFavors Seattle Mariners
  • Rest DaysFavors Seattle Mariners
  • Defensive EfficiencyNeutral
  • Weather ImpactNeutral
  • Recent FormNeutral
  • InjuriesNeutral
Sign in to see factor scores, charts, and what-if simulations

What's Driving This Game

Each factor's contribution to the final win probability

KC
SEA
Home Field Advantage
Rest Days
Favours KC|Favours SEA

Premium feature: factor breakdown

Start 14-day free trial →

Model vs. Market

Comparing our model against market-implied probabilities

Mariners

Our Model57%

Royals

Our Model43%

Understanding the win probability calculation

1 factor not shown (insufficient data)

Model version: 1.0.0 • Calculated: 5/1/2026, 8:45:00 AM

Key Players

Royals

Noah CameronSP
Seth LugoSP
Michael WachaSP
Stephen KolekSP
Randy DobnakSP

Mariners

Bryce MillerSP
Bryan WooSP
Kade AndersonSP
Emerson HancockSP
Logan GilbertSP

Learn About Our Analysis

Learn about the factors behind our predictions

Frequently Asked Questions

Mariners has a 57% win probability, while Royals has a 43% 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 T-Mobile Park in Seattle, Washington.

View all MLB games