- Starter matchup: Ethan Pecko (Houston Astros) vs George Kirby (Seattle Mariners).
- Lineup status: projected until official release.
- NRFI model: 49% probability, lean YRFI, -4.5% edge.
Pitching Matchup
On the season, Ethan Pecko holds the ERA edge in this matchup. Ethan Pecko carries a 3.77 ERA and 1.12 WHIP, while George Kirby sits at 4.24 ERA and 1.39 WHIP.
Strikeout rates: Ethan Pecko at 5.97 K/9, George Kirby at 7.59 K/9.
K projections: Ethan Pecko at 2.9 (line 3.5)
George Kirby projected at 3.3 (line 4.5).
George Kirby has a 69.1% career NRFI rate. No first-inning data available for Ethan Pecko.
Both starters throw from the R side, limiting platoon splits for either lineup.
Strikeout Projections
Our strikeout model weighs pitcher K rate, opponent lineup whiff tendency, park factors, and umpire zone size to project total strikeouts per starter.
Ethan Pecko (Houston Astros) is projected for 2.9 strikeouts against a posted line of 3.5. The projection is close to the line with no actionable edge.
He faces a high-K lineup that strikes out at 24.7% with a 28.0% whiff rate.
George Kirby (Seattle Mariners) is projected for 3.3 strikeouts against a posted line of 4.5. The projection sits 1.2 K below the line, giving the model an Under lean.
He faces a moderate-K lineup that strikes out at 23.3% with a 28.0% whiff rate.
The Seattle Mariners lineup is more vulnerable to strikeouts in this matchup. Seattle Mariners batters K at 24.7%, Houston Astros batters at 23.3%.
NRFI & First 5 Analysis
Our NRFI model analyzes both starting pitchers' first-inning profiles, the top-of-order hitters in each lineup, the umpire's historical zone, and environmental factors to produce a probability estimate. For this game, the model assigns a 48.7% probability of no runs in the first inning, compared to the market's implied probability of 53.3%.
- That creates a slim -4.5% edge on YRFI.
- The best available line is NRFI -114 / YRFI -106 at FanDuel.
The home plate umpire for this game has not yet been assigned. MLB typically posts assignments the morning of game day. Umpire data will be added automatically once the assignment is posted.
Our NRFI model sits at 160-154 (51.0%) on official picks this season.
Prop Edges
Lineup & Matchup Breakdown
Lineups are projected as of this writing.
Houston Astros K vulnerability: 23.3% strikeout rate, 28.0% whiff rate.
Seattle Mariners K vulnerability: 24.7% strikeout rate, 28.0% whiff rate.
Ballpark, Weather & Umpire
- T-Mobile Park carries a 0.95 run factor (neutral).
- Home run factor: 0.92 — the park suppresses HR power.
- Park notes: Cool maritime climate; Lower wall in right field; Retractable roof.
- Roof: Retractable.
Climate controlled. Roof expected closed. Standard 72F conditions, no wind factor.
Home plate umpire: Not yet assigned. Umpire data will be added once the assignment is posted.
Run Projections & Total
- Our projection model puts the total at 5.4 combined runs, with Houston Astros projected for 2.7 and Seattle Mariners for 2.7.
- That's 2.1 runs below the posted total of 7.5, suggesting a lean toward the Under.
- The run projection is essentially a coin flip between these two teams.