How does the NFL Game Simulator work?

The NFL Game Simulator uses play-by-play models and statistical projections to predict outcomes, scores, and player stats for each matchup.

Are NFL predictions updated daily?

Yes. Predictions and player projections update daily with the latest stats, depth charts, and matchup data.

How accurate are the NFL predictions?

Accuracy varies by week and matchup. We publish performance summaries so you can track results over time.

How often are predictions refreshed?

Predictions refresh daily and may update during the day when key injuries or depth chart changes occur.

NFL Predictions for Week 4

Looking like a big day for Puka Nacua (Rams). In this week's simulations, he averaged 125.6 receiving yards per game.
To view all of this week's player projections, you'll need a GameSim+ account.

Odds: Line | O/U

Week 4 NFL Games
Date/Time	Matchup	Prediction	Actual	Result
9/7/2025 4:05 PM	San Francisco 49ers @ Seattle Seahawks by 1.5	Seattle Seahawks WIN 22.4-20.1 won 54.87% of sims, average margin of 2.3 Prediction Projected Stats	San Francisco 49ers wins 17-13
9/14/2025 1 PM	San Francisco 49ers @ New Orleans Saints by 3	San Francisco 49ers WIN 19.5-18.0 won 54.33% of sims, average margin of 1.5 Prediction Projected Stats	San Francisco 49ers wins 26-21
9/21/2025 4:25 PM	Arizona Cardinals @ San Francisco 49ers by 2.5	Arizona Cardinals WIN 15.0-12.0 won 59.53% of sims, average margin of 3.1 Prediction Projected Stats	San Francisco 49ers wins 16-15
9/28/2025 4:05 PM	Jacksonville Jaguars @ San Francisco 49ers by 3.5	San Francisco 49ers WIN 18.2-15.4 won 61.43% of sims, average margin of 2.8 Prediction \| Simulate Projected Stats

Legend/Totals

Correct Picks	1 (33.3%)
Incorrect Picks	2 (66.7%)
Final Margin within 7 Pts	3 (100.0%)
Beat the Spread	1 (33.3%)

NFL Predictions for Week 4

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