Indianapolis Colts vs Kansas City Chiefs prediction for September 21, 2026: Our Monte Carlo simulation ran 10,000 game iterations and projects Kansas City Chiefs 26.2 - Indianapolis Colts 20.6. Kansas City Chiefs is favored with a 65.8% win probability. The spread is -6.0 and the total is 46.0.
Kansas City Chiefs
26.2
Projected Score
VS
O/U 46.0
Indianapolis Colts
20.6
Projected Score
Win Probability
Kansas City ChiefsIndianapolis Colts
-6.0
Spread (Kansas City Chiefs)
46.0
Total Line
10,000
Simulations
Calibrated accuracy at this confidence: 70.0% (339 games)
Projected Points Range 10th – 90th percentile
Indianapolis Colts
132128
Kansas City Chiefs
192633
Market Lines
Spread
Kansas City Chiefs -6.0
Total
46.0
Game Conditions
Overcast
71°F9 mph wind
Model Edge
Model Edge & Sizing
Edge Analysis
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How this prediction was generated: This page shows output from the Olympus Bets NFL Football Monte Carlo engine. Each game is simulated 10,000 times using real-time team data, injury reports, and current odds. Probabilities are calibrated using Bayesian methods and sized via the Kelly Criterion. Probabilities are calibrated using Bayesian methods and sized via the Kelly Criterion. Full methodology →
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Permanent record: this game page is retired 90 days after the event. The full graded NFL 2026 record — every pick, win rate, units and ROI — lives on the NFL 2026 season report card.