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Pittsburgh Pirates vs Arizona Diamondbacks Preview

Pittsburgh brings a three-game win streak to Chase Field while Arizona tries to snap a four-game skid. Rodriguez and Chandler square off

Pittsburgh Pirates at Arizona Diamondbacks MLB game preview for May 5, 2026
PIT
Pittsburgh Pirates
Bubba Chandler RHP
@
9:40 PM ET
Chase Field
ARI
Arizona Diamondbacks
Eduardo Rodriguez LHP
Last updated Tuesday, May 5, 2026
Final This game has finished. Read the recap for final score, model grades, and box score.

Key Facts

Matchup
Pittsburgh Pirates at Arizona Diamondbacks
Date
Tuesday, May 5, 2026
First Pitch
9:40 PM ET
Venue
Chase Field
Probable Starters
Bubba Chandler (RHP) vs Eduardo Rodriguez (LHP)
Lineups
Projected
Odds Snapshot
May 5, 9:41 PM ET
Last Updated
May 5, 6:06 PM ET

Betting Board

Snapshot May 5, 9:41 PM ET
Moneyline
PIT +121
ARI -132
Total
Over 9 -110
Under 9 -110
Run Line
PIT +1.5 -194
ARI -1.5 +160

Model Angles

NRFI Model
NRFI · 55%
+2.8% edge
Projected Total
5.5
model combined runs
Park Factor
1.05
Neutral · HR 1.09
First Pitch Weather
Roof
Climate controlled
The Pittsburgh Pirates bring a three-game winning streak and a 19-16 record into Chase Field on Tuesday night to face an Arizona Diamondbacks squad searching for answers during a four-game losing streak. Eduardo Rodriguez takes the mound for the Diamondbacks with a 3.03 ERA and 1.41 WHIP, striking out 6.06 batters per nine innings. The Pirates counter with Bubba Chandler, who carries a 4.97 ERA, 1.48 WHIP, and 8.38 strikeouts per nine. The projected total sits at 5.5 runs in a pitcher-friendly environment, with Chase Field holding a 1.05 park factor. Game time conditions call for 72-degree temperatures with no wind impact. The no-run first inning shows a 55 percent probability with a 2.8 percent edge. Chandler is projected for 4.1 strikeouts against a line of 4.5, while Rodriguez projects at 4.8 strikeouts versus a 5.5 line.
  • Pirates carry three-game winning streak into Tuesday night
  • Diamondbacks have lost four straight entering this matchup
  • Rodriguez posts 3.03 ERA while Chandler sits at 4.97

Pitching Matchup

PIT Away
Bubba Chandler
RHP · 1-3 · 6 GS
ERA
4.97
WHIP
1.48
K/9
8.38
IP
29.0
Career: 4.48 ERA · 1.19 WHIP · 8.65 K/9
ARI Home
Eduardo Rodriguez
LHP · 2-0 · 6 GS
ERA
3.03
WHIP
1.41
K/9
6.06
IP
32.2
Career: 4.16 ERA · 1.33 WHIP · 8.88 K/9
NRFI: 74.0%
1st Inn ERA: 4.33

On the season, Eduardo Rodriguez holds the ERA edge in this matchup. Bubba Chandler carries a 4.97 ERA and 1.48 WHIP, while Eduardo Rodriguez sits at 3.03 ERA and 1.41 WHIP.
Strikeout rates: Bubba Chandler at 8.38 K/9, Eduardo Rodriguez at 6.06 K/9.
K projections: Bubba Chandler at 4.1 (line 4.5)
Eduardo Rodriguez projected at 4.8 (line 5.5).
Eduardo Rodriguez has a 74.0% career NRFI rate. No first-inning data available for Bubba Chandler.
This is a RHP vs LHP matchup, creating potential platoon advantages in both lineups.

Strikeout Projections

Bubba Chandler vs ARI
Proj: 4.1Line: 4.5
-0.4
Confidence:
Eduardo Rodriguez vs PIT
Proj: 4.8Line: 5.5
-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.

Bubba Chandler (Pittsburgh Pirates) is projected for 4.1 strikeouts against a posted line of 4.5. The projection is close to the line with no actionable edge.
He faces a moderate-K lineup that strikes out at 23.4% with a 28.0% whiff rate.

Eduardo Rodriguez (Arizona Diamondbacks) is projected for 4.8 strikeouts against a posted line of 5.5. The projection is close to the line with no actionable edge.
He faces a high-K lineup that strikes out at 27.3% with a 28.0% whiff rate.

The Pittsburgh Pirates lineup is more vulnerable to strikeouts in this matchup. Arizona Diamondbacks batters K at 23.4%, Pittsburgh Pirates batters at 27.3%.

NRFI & First 5 Analysis

NRFI Model
55.2%
probability of NRFI
+2.8%
market edge
Monitor
Market implied: 52.4%Model: 55.2%
First 5 Innings
3.1est. F5 runs
PIT
4.97 ERA
4.8 inn/start
ARI
3.03 ERA
5.4 inn/start
F5 lean: Moderate ARI
PIT K Projection
Bubba Chandler
4.1proj
Line: 4.5
-0.4 NEUTRAL
Confidence
ARI K Projection
Eduardo Rodriguez
4.8proj
Line: 5.5
-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 55.2% probability of no runs in the first inning, compared to the market's implied probability of 52.4%.

  • That creates a slim 2.8% edge on NRFI.
  • The best available line is NRFI -110 / YRFI -110 at FanDuel.
  • Home plate umpire Brennan Miller runs a average zone. See the umpire section below for full career data.
  • Our NRFI model sits at 41-39 (51.2%) on official picks this season.

Prop Edges

4 model signals detected
Hits (1+) Lean Hit 0.5
69.3%
Hits (1+) Lean Hit 0.5
69.3%
Hits (1+) Lean Hit 0.5
69.3%
Hits (1+) Lean Hit 0.5
69.3%
See all today's picks and edges

Lineup & Matchup Breakdown

Pittsburgh Pirates Projected
K%: 27.3
Whiff rate: 28.0%Team page
Arizona Diamondbacks Projected
K%: 23.4
1Gabriel MorenoRC
6Ketel MarteS2B
7Ildemaro VargasS1B
8Corbin CarrollLRF
Whiff rate: 28.0%Team page
Batter vs Pitcher matchup tool

Lineups are projected as of this writing.

Pittsburgh Pirates K vulnerability: 27.3% strikeout rate, 28.0% whiff rate.

Arizona Diamondbacks K vulnerability: 23.4% strikeout rate, 28.0% whiff rate.

Ballpark, Weather & Umpire

Chase Field
Run Factor1.05
HR Factor1.09
Full park profile
Home Plate Umpire
Brennan Miller
Slightly wide NRFI: 55.8% 95 games
Full umpire profile
  • Chase Field carries a 1.05 run factor (neutral).
  • Home run factor: 1.09 — the park elevates HR power.
  • Park notes: High desert elevation (1100ft); Retractable roof; Hot climate.
  • Roof: Retractable.

Climate controlled. Roof expected closed. Standard 72F conditions, no wind factor.

  • Home plate umpire: Brennan Miller.
  • Career NRFI rate: 55.8% across 95 games tracked.
  • Zone tendency: Slightly wide.
  • K factor: 0.996 (league average strikeouts in his games).

Run Projections & Total

  • Our projection model puts the total at 5.5 combined runs, with Pittsburgh Pirates projected for 2.7 and Arizona Diamondbacks for 2.8.
  • That's 3.5 runs below the posted total of 9.0, suggesting a lean toward the Under.
  • The run projection is essentially a coin flip between these two teams.
The Bottom Line
Pittsburgh looks to extend its winning streak to four games against a reeling Arizona team that has dropped four consecutive contests. The projected total of 5.5 suggests a low-scoring affair with mild conditions and a neutral park factor.
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.