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San Diego Padres vs Arizona Diamondbacks Preview

San Diego Padres (17-8) visit Arizona Diamondbacks (14-11) at Estadio Alfredo Harp Helu. Germán Márquez opposes Zac Gallen in Friday matchup

San Diego Padres at Arizona Diamondbacks MLB game preview for April 25, 2026
SD
San Diego Padres
Germán Márquez RHP
@
6:05 PM ET
Estadio Alfredo Harp Helu
ARI
Arizona Diamondbacks
Zac Gallen RHP
Last updated Saturday, April 25, 2026
Final This game has finished. Read the recap for final score, model grades, and box score.

Key Facts

Matchup
San Diego Padres at Arizona Diamondbacks
Date
Saturday, April 25, 2026
First Pitch
6:05 PM ET
Venue
Estadio Alfredo Harp Helu
Probable Starters
Germán Márquez (RHP) vs Zac Gallen (RHP)
Lineups
TBD
Odds Snapshot
Apr 25, 6:06 PM ET
Last Updated
Apr 25, 6:08 PM ET

Betting Board

Snapshot Apr 25, 6:06 PM ET
Moneyline
SD -101
ARI -106
Total
Over 16 -105
Under 16 -115
Run Line
SD -1.5 +130
ARI +1.5 -156

Model Angles

NRFI Model
YRFI · 40%
-11.2% edge
Projected Total
TBD
Park Factor
N/A
First Pitch Weather
TBD
The San Diego Padres visit the Arizona Diamondbacks at Estadio Alfredo Harp Helu on Friday evening, with first pitch scheduled for 6:05 PM ET. San Diego enters with a 17-8 record and riding a one-game winning streak, while Arizona sits at 14-11 following a one-game losing streak. Right-hander Germán Márquez gets the ball for the Padres, bringing a 3.86 ERA, 1.39 WHIP, and 7.23 strikeouts per nine innings into the contest. The Diamondbacks counter with right-hander Zac Gallen, who carries a 3.51 ERA, 1.48 WHIP, and 4.91 strikeouts per nine innings. Márquez is projected for 4.3 strikeouts against a line of 2.5, while Gallen is projected for 4.2 strikeouts against a line of 3.5. The NRFI shows a 40 percent probability with an edge favoring the YRFI side.
  • Padres enter 17-8 with one-game winning streak
  • Márquez posts 3.86 ERA and 7.23 strikeouts per nine
  • Gallen carries 3.51 ERA with 4.91 strikeouts per nine

Pitching Matchup

SD Away
Germán Márquez
RHP · 2-1 · 4 GS
ERA
3.86
WHIP
1.39
K/9
7.23
IP
18.2
Career: 4.66 ERA · 1.33 WHIP · 8.37 K/9
NRFI: 56.7%
1st Inn ERA: 9.00
ARI Home
Zac Gallen
RHP · 1-1 · 5 GS
ERA
3.51
WHIP
1.48
K/9
4.91
IP
25.2
Career: 3.58 ERA · 1.17 WHIP · 9.36 K/9
NRFI: 69.9%
1st Inn ERA: 4.71

On the season, Zac Gallen holds the ERA edge in this matchup. Germán Márquez carries a 3.86 ERA and 1.39 WHIP, while Zac Gallen sits at 3.51 ERA and 1.48 WHIP.
Strikeout rates: Germán Márquez at 7.23 K/9, Zac Gallen at 4.91 K/9.
K projections: Germán Márquez at 4.3 (line 2.5)
Zac Gallen projected at 4.2 (line 3.5).
First-inning scoring: Germán Márquez holds a 56.7% career NRFI rate, Zac Gallen at 69.9%. Combined average: 63.3%.
Both starters throw from the R side, limiting platoon splits for either lineup.

Strikeout Projections

Germán Márquez vs ARI
Proj: 4.3Line: 2.5
+1.8
Confidence:
Zac Gallen vs SD
Proj: 4.2Line: 3.5
+0.7
Confidence:
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.

Germán Márquez (San Diego Padres) is projected for 4.3 strikeouts against a posted line of 2.5. The projection is close to the line with no actionable edge.
He faces a moderate-K lineup that strikes out at 22.0% with a 28.0% whiff rate.

Zac Gallen (Arizona Diamondbacks) is projected for 4.2 strikeouts against a posted line of 3.5. The projection is close to the line with no actionable edge.
He faces a moderate-K lineup that strikes out at 22.0% with a 28.0% whiff rate.

The San Diego Padres lineup is more vulnerable to strikeouts in this matchup. Arizona Diamondbacks batters K at 22.0%, San Diego Padres batters at 22.0%.

NRFI & First 5 Analysis

NRFI Model
40.0%
probability of YRFI
+-11.2%
market edge
Monitor
Market implied: 51.2%Model: 40.0%
First 5 Innings
SD
3.86 ERA
4.5 inn/start
ARI
3.51 ERA
5.0 inn/start
F5 lean: Even matchup
SD K Projection
Germán Márquez
4.3proj
Line: 2.5
+1.8 NEUTRAL
Confidence
ARI K Projection
Zac Gallen
4.2proj
Line: 3.5
+0.7 NEUTRAL
Confidence
Explore all model projections

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 40.0% probability of no runs in the first inning, compared to the market's implied probability of 51.2%.

  • That creates a slim -11.2% edge on YRFI.
  • The best available line is NRFI -105 / YRFI -115 at FanDuel.
  • Home plate umpire Stu Scheurwater runs a average zone. See the umpire section below for full career data.
  • Our NRFI model sits at 26-26 (50.0%) on official picks this season.

Prop Edges

4 model signals detected
Hits (1+) Lean Hit 0.5
66.9%
Ketel Marte
Home Run Elite 0.5
17.6%
Home Run Very Strong 0.5
15.6%
Home Run Strong 0.5
12.3%
See all today's picks and edges

Lineup & Matchup Breakdown

San Diego Padres Projected
Projected batting order unavailable. This will update when probable or confirmed lineup data is available.
Arizona Diamondbacks Projected
Projected batting order unavailable. This will update when probable or confirmed lineup data is available.
Batter vs Pitcher matchup tool

Lineups are unavailable as of this writing.

Ballpark, Weather & Umpire

Estadio Alfredo Harp Helu
Park factor data unavailable
Home Plate Umpire
Stu Scheurwater
Average NRFI: 43.3% 90 games
Full umpire profile

Park factor data not available for Estadio Alfredo Harp Helu.

Weather forecast not available for this game.

  • Home plate umpire: Stu Scheurwater.
  • Career NRFI rate: 43.3% across 90 games tracked.
  • Zone tendency: Average.
  • K factor: 0.985 (league average strikeouts in his games).

Run Projections & Total

Run projections not available for this game.

The Bottom Line
San Diego brings superior form and record into Mexico City, while both starting pitchers offer similar ERAs near 3.50. Márquez generates significantly more strikeouts per nine innings than Gallen, though both project modestly above their strikeout lines for this contest.
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.