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Early Preview Lineups: Confirmed Odds Posted 6 min read

St. Louis Cardinals vs Pittsburgh Pirates Preview

STL at PIT 2026-09-23 preview: probable pitchers, projected lineups, NRFI/F5 model picks, weather, ballpark, and umpire context.

St. Louis Cardinals at Pittsburgh Pirates MLB game preview for September 23, 2026
STL
St. Louis Cardinals
Matthew Liberatore LHP
@
6:40 PM ET
PNC Park
PIT
Pittsburgh Pirates
Lake Bachar RHP
Last updated Wednesday, September 23, 2026
Final This game has finished. Read the recap for final score, model grades, and box score.

Key Facts

Matchup
St. Louis Cardinals at Pittsburgh Pirates
Date
Wednesday, September 23, 2026
First Pitch
6:40 PM ET
Venue
PNC Park
Probable Starters
Matthew Liberatore (LHP) vs Lake Bachar (RHP)
Lineups
Confirmed
Odds Snapshot
Sep 23, 6:41 PM ET
Last Updated
Sep 23, 4:23 PM ET

Betting Board

Snapshot Sep 23, 6:41 PM ET
Moneyline
STL +124
PIT -134
Total
Over 7.5 -102
Under 7.5 -120
Run Line
STL +1.5 -192
PIT -1.5 +158

Model Angles

NRFI Model
NRFI · 53%
+4.3% edge
Projected Total
5.2
model combined runs
Park Factor
1.00
Neutral · HR 0.98
First Pitch Weather
64°F
8.5 mph ENE
The St. Louis Cardinals visit the Pittsburgh Pirates at 6:40 PM ET at PNC Park. Probable starters: Matthew Liberatore for St. Louis Cardinals opposite Lake Bachar for Pittsburgh Pirates. Lineups are confirmed. This preview is built deterministically from projected lineups, probable starters, NRFI model context, market prices, first-pitch weather, park factors, and TheCapperIO model context.
  • Starter matchup: Matthew Liberatore (St. Louis Cardinals) vs Lake Bachar (Pittsburgh Pirates).
  • Lineup status: confirmed by both teams.
  • NRFI model: 53% probability, lean NRFI, +4.3% edge.

Pitching Matchup

STL Away
Matthew Liberatore
LHP · 5-14 · 30 GS
ERA
5.36
WHIP
1.49
K/9
8.92
IP
149.1
Career: 4.86 ERA · 1.41 WHIP · 7.82 K/9
NRFI: 68.5%
1st Inn ERA: 5.14
PIT Home
Lake Bachar
RHP · 1-4 · 11 GS
ERA
3.56
WHIP
1.14
K/9
9.40
IP
83.1
Career: 3.74 ERA · 1.19 WHIP · 9.51 K/9

On the season, Lake Bachar holds the ERA edge in this matchup. Matthew Liberatore carries a 5.36 ERA and 1.49 WHIP, while Lake Bachar sits at 3.56 ERA and 1.14 WHIP.
Strikeout rates: Matthew Liberatore at 8.92 K/9, Lake Bachar at 9.40 K/9.
K projections: Matthew Liberatore at 3.7 (line 4.5)
Lake Bachar projected at 3.0 (line 4.0).
Matthew Liberatore has a 68.5% career NRFI rate. No first-inning data available for Lake Bachar.
This is a LHP vs RHP matchup, creating potential platoon advantages in both lineups.

Strikeout Projections

Matthew Liberatore vs PIT
Proj: 3.7Line: 4.5
-0.8
Confidence:
Lake Bachar vs STL
Proj: 3.0Line: 4.0
-1.0
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.

Matthew Liberatore (St. Louis Cardinals) is projected for 3.7 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 23.5% with a 28.0% whiff rate.

Lake Bachar (Pittsburgh Pirates) is projected for 3.0 strikeouts against a posted line of 4.0. The projection sits 1.0 K below the line, giving the model an Under lean.
He faces a moderate-K lineup that strikes out at 22.6% with a 28.0% whiff rate.

The Pittsburgh Pirates lineup is more vulnerable to strikeouts in this matchup. Pittsburgh Pirates batters K at 23.5%, St. Louis Cardinals batters at 22.6%.

NRFI & First 5 Analysis

NRFI Model
53.4%
probability of NRFI
+4.3%
market edge
Monitor
Market implied: 49.0%Model: 53.4%
First 5 Innings
2.9est. F5 runs
STL
5.36 ERA
5.0 inn/start
PIT
3.56 ERA
7.6 inn/start
F5 lean: Moderate PIT
STL K Projection
Matthew Liberatore
3.7proj
Line: 4.5
-0.8 NEUTRAL
Confidence
PIT K Projection
Lake Bachar
3.0proj
Line: 4.0
-1.0 UNDER
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 53.4% probability of no runs in the first inning, compared to the market's implied probability of 49.0%.

  • That creates a slim 4.3% edge on NRFI.
  • The best available line is NRFI +104 / YRFI -128 at FanDuel.
  • Home plate umpire John Bacon runs a wide zone. See the umpire section below for full career data.
  • Our NRFI model sits at 160-154 (51.0%) on official picks this season.

Prop Edges

3 model signals detected
Lake Bachar
Strikeouts Under 4.0
Hits
65.6%
Home Run Strong 0.5
13.8%
See all today's picks and edges

Lineup & Matchup Breakdown

St. Louis Cardinals Confirmed
K%: 22.6
Whiff rate: 28.0%Team page
Pittsburgh Pirates Confirmed
K%: 23.5
2Rafael Flores Jr.RC
3Bryan ReynoldsSLF
Whiff rate: 28.0%Team page
Batter vs Pitcher matchup tool

Lineups are confirmed as of this writing.

St. Louis Cardinals K vulnerability: 22.6% strikeout rate, 28.0% whiff rate.

Pittsburgh Pirates K vulnerability: 23.5% strikeout rate, 28.0% whiff rate.

Ballpark, Weather & Umpire

PNC Park
Run Factor1.00
HR Factor0.98
Full park profile
Home Plate Umpire
John Bacon
Wide NRFI: 40.0% 5 games
Full umpire profile
Hourly Game Forecast
64°
6 PM
9 mph
ENE
60°
7 PM
8 mph
ENE
60°
8 PM
8 mph
ENE
60°
9 PM
8 mph
ENE
  • PNC Park carries a 1.00 run factor (neutral).
  • Home run factor: 0.98 — the park neutral for HR power.
  • Park notes: Right field wall angles; Elevated RF corner; Allegheny River backdrop.
  • First pitch forecast: 64F with 8 mph winds from the ENE. Humidity: 62%.
  • Temperature drops from 64F at first pitch to 60F by the late innings.
  • Wind advisory: 8 mph winds from the ENE may impact fly balls.
  • Home plate umpire: John Bacon.
  • Career NRFI rate: 40.0% across 5 games tracked.
  • Zone tendency: Wide.
  • K factor: 0.979 (below average strikeouts in his games).

Run Projections & Total

  • Our projection model puts the total at 5.2 combined runs, with St. Louis Cardinals projected for 2.6 and Pittsburgh Pirates for 2.6.
  • That's 2.3 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.
The Bottom Line
This is a data-first preview, not a pick. Treat the NRFI model signal as context alongside the pitching matchup. Verify current odds before placing any bet. 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.