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Arizona Diamondbacks vs San Diego Padres Preview

ARI at SD 2026-09-25 preview: probable pitchers, projected lineups, NRFI/F5 model picks, weather, ballpark, and umpire context.

Arizona Diamondbacks at San Diego Padres MLB game preview for September 25, 2026
ARI
Arizona Diamondbacks
Brandon Pfaadt RHP
@
9:40 PM ET
Petco Park
SD
San Diego Padres
TBD ?HP
Last updated Friday, September 25, 2026
Final This game has finished. Read the recap for final score, model grades, and box score.

Key Facts

Matchup
Arizona Diamondbacks at San Diego Padres
Date
Friday, September 25, 2026
First Pitch
9:40 PM ET
Venue
Petco Park
Probable Starters
Brandon Pfaadt (RHP) vs TBD (?HP)
Lineups
Projected
Last Updated
Sep 25, 7:24 AM ET

Betting Board

Lines not yet posted
Sportsbooks have not published markets for this matchup yet. Check back closer to first pitch, or see today's model-backed picks for games with live odds.

Model Angles

NRFI Model
Not yet available
Projected Total
5.2
model combined runs
Park Factor
0.96
Neutral · HR 0.92
First Pitch Weather
75°F
7.5 mph NNW
The Arizona Diamondbacks visit the San Diego Padres at 9:40 PM ET at Petco Park. Probable starters: Brandon Pfaadt for Arizona Diamondbacks opposite TBD for San Diego Padres. Lineups are projected until first pitch. This preview is built deterministically from projected lineups, probable starters, odds where available, first-pitch weather, park factors, and TheCapperIO model context.
  • Starter matchup: Brandon Pfaadt (Arizona Diamondbacks) vs TBD (San Diego Padres).
  • Lineup status: projected until official release.
  • Park factor: 0.96 runs; venue Petco Park.

Pitching Matchup

ARI Away
Brandon Pfaadt
RHP · 7-3 · 18 GS
ERA
3.72
WHIP
1.17
K/9
6.10
IP
128.1
Career: 4.82 ERA · 1.28 WHIP · 7.92 K/9
NRFI: 74.4%
1st Inn ERA: 3.96
SD Home
TBD
?HP · undefined-undefined · undefined GS
ERA
undefined
WHIP
undefined
K/9
undefined
IP
undefined
Career: undefined ERA · undefined WHIP · undefined K/9
  • Brandon Pfaadt has a 74.4% career NRFI rate. No first-inning data available for TBD.
  • This is a RHP vs ?HP matchup, creating potential platoon advantages in both lineups.

Strikeout Projections

View all K projections on SlateIQ

Our strikeout model weighs pitcher K rate, opponent lineup whiff tendency, park factors, and umpire zone size to project total strikeouts per starter.

Strikeout projections not available for this game.

Lineup & Matchup Breakdown

Batter vs Pitcher matchup tool

Lineups are projected as of this writing.

Ballpark, Weather & Umpire

Petco Park
Run Factor0.96
HR Factor0.92
Full park profile
Hourly Game Forecast
75°
9 PM
8 mph
NNW
72°
10 PM
7 mph
NNW
70°
11 PM
6 mph
NW
70°
12 AM
5 mph
NNW
  • Petco Park carries a 0.96 run factor (neutral).
  • Home run factor: 0.92 — the park suppresses HR power.
  • Park notes: Cool San Diego weather; Low humidity suppresses HRs; Shallow right field.
  • First pitch forecast: 75F with 8 mph winds from the NNW. Humidity: 79%.
  • Temperature drops from 75F at first pitch to 70F by the late innings.

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 5.2 combined runs, with Arizona Diamondbacks projected for 2.6 and San Diego Padres for 2.5.
No total line posted yet for comparison.
The run projection is essentially a coin flip between these two teams.

The Bottom Line
This is a data-first preview, not a pick. Check final odds once sportsbooks post markets. Confirm lineups at first pitch. Bet responsibly. 1-800-GAMBLER.
This preview is generated from thecapper.io projection models and publicly available data. All projections are model estimates, not guarantees. Gamble responsibly. If you or someone you know has a gambling problem, call 1-800-GAMBLER.