MLB First Inning Research Hub
BETAExplore up-to-date stats, trends and insights focused on the first innings of MLB games
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Stats reflect past performance. Not predictions.
Data updated through: June 28, 2025
Ballpark First Inning Statistics
Key:
Better
League Avg
Worse
Darker colors highlight differences vs. league average
Compare ballpark environments and their impact on first inning scoring
Darker colors indicate greater differences vs. league average.
Ballpark | Games | NRFI | YRFI | TIE | Streak | NRFI % | YRFI % | TIE % | Avg Runs/Game | Avg Temperature |
|---|---|---|---|---|---|---|---|---|---|---|
 | 43 | 29 | 14 | 29 | 1 YRFI | 67.44% | 32.56% | 67.44% | 0.60 | 68.4°F |
 | 39 | 20 | 19 | 22 | 2 NRFI | 51.28% | 48.72% | 56.41% | 1.10 | 71.6°F |
 | 43 | 19 | 24 | 19 | 1 NRFI | 44.19% | 55.81% | 44.19% | 0.86 | 72.3°F |
 | 40 | 18 | 22 | 19 | 1 YRFI | 45.00% | 55.00% | 47.50% | 1.27 | 80.0°F |
 | 41 | 25 | 16 | 25 | 7 NRFI | 60.98% | 39.02% | 60.98% | 0.85 | 66.6°F |
 | 40 | 19 | 21 | 19 | 1 NRFI | 47.50% | 52.50% | 47.50% | 1.32 | 71.0°F |
 | 43 | 25 | 18 | 26 | 4 NRFI | 58.14% | 41.86% | 60.47% | 0.77 | 64.6°F |
 | 40 | 17 | 23 | 19 | 2 NRFI | 42.50% | 57.50% | 47.50% | 1.23 | 68.3°F |
 | 45 | 26 | 19 | 26 | 1 YRFI | 57.78% | 42.22% | 57.78% | 0.87 | 73.0°F |
 | 44 | 16 | 28 | 18 | 2 NRFI | 36.36% | 63.64% | 40.91% | 1.64 | 68.3°F |
 | 41 | 17 | 24 | 21 | 4 YRFI | 41.46% | 58.54% | 51.22% | 1.51 | 62.4°F |
 | 50 | 22 | 28 | 24 | 1 NRFI | 44.00% | 56.00% | 48.00% | 1.00 | 83.3°F |
 | 41 | 24 | 17 | 26 | 1 NRFI | 58.54% | 41.46% | 63.41% | 0.80 | 74.6°F |
 | 42 | 18 | 24 | 19 | 2 YRFI | 42.86% | 57.14% | 45.24% | 1.31 | 71.4°F |
 | 43 | 31 | 12 | 32 | 1 NRFI | 72.09% | 27.91% | 74.42% | 0.47 | 72.8°F |
League AverageAverage | 40 | 21 | 20 | 22 | - | 51.33% | 48.67% | 54.55% | 1.02 | - |
 | 41 | 21 | 20 | 22 | 2 YRFI | 51.22% | 48.78% | 53.66% | 0.73 | 75.1°F |
 | 40 | 19 | 21 | 21 | 2 NRFI | 47.50% | 52.50% | 52.50% | 1.32 | 71.7°F |
 | 42 | 21 | 21 | 23 | 2 YRFI | 50.00% | 50.00% | 54.76% | 0.76 | 60.9°F |
 | 40 | 23 | 17 | 23 | 1 YRFI | 57.50% | 42.50% | 57.50% | 1.02 | 75.2°F |
 | 39 | 22 | 17 | 23 | 5 NRFI | 56.41% | 43.59% | 58.97% | 0.92 | 64.7°F |
 | 43 | 25 | 18 | 28 | 1 YRFI | 58.14% | 41.86% | 65.12% | 0.63 | 66.6°F |
 | 39 | 24 | 15 | 24 | 1 YRFI | 61.54% | 38.46% | 61.54% | 0.74 | 64.1°F |
 | 42 | 19 | 23 | 22 | 1 NRFI | 45.24% | 54.76% | 52.38% | 1.19 | 63.6°F |
 | 41 | 19 | 22 | 20 | 1 NRFI | 46.34% | 53.66% | 48.78% | 1.10 | 68.0°F |
 | 42 | 18 | 24 | 20 | 2 NRFI | 42.86% | 57.14% | 47.62% | 1.60 | 75.4°F |
 | 39 | 24 | 15 | 25 | 2 NRFI | 61.54% | 38.46% | 64.10% | 0.90 | 60.4°F |
 | 39 | 19 | 20 | 21 | 4 NRFI | 48.72% | 51.28% | 53.85% | 0.85 | 65.7°F |
🏟️ | 2 | 2 | 0 | 2 | 2 NRFI | 100.00% | 0.00% | 100.00% | 0.00 | 72.0°F |
 | 39 | 16 | 23 | 17 | 2 YRFI | 41.03% | 58.97% | 43.59% | 0.90 | 76.1°F |
 | 38 | 19 | 19 | 20 | 4 YRFI | 50.00% | 50.00% | 52.63% | 1.26 | 61.3°F |
 | 42 | 21 | 21 | 23 | 2 NRFI | 50.00% | 50.00% | 54.76% | 1.14 | 65.5°F |
Why First Innings?!
Who doesn’t love a quick first inning prop bet? We noticed how little data was out there to guide smart wagers, so we compiled 20+ seasons of pitch-by-pitch info from the first innings of Major League Baseball games going back to 2005. Curious about how starting pitchers perform in those crucial first at-bats? Our upcoming dashboard will give you everything you need to analyze NRFI and YRFI bets with confidence—from pitcher profiles to ballpark factors and more.
Latest Updates
April 12, 2025
✓
Updated "2024+" column to include 2025 data
March 30, 2025
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Updated schedule to refresh 15 mins after final game of day
March 29, 2025
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Added basic matchup previews for upcoming games
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Fetching latest probable pitchers every 30 minutes
Features Coming Soon
Upcoming features will include:
- • Even more detailed stats in high demand (e.g., pitches per inning, etc.)
- • Up-to-date NRFI/YRFI standings at the team-level, plus league statistics
- • Pitcher profile pages, advanced ratings, umpire stats, weather, and more