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Philadelphia Phillies vs New York Mets Preview

PHI at NYM 2026-09-18 preview: probable pitchers, projected lineups, NRFI/F5 model picks, weather, ballpark, and umpire context.

Philadelphia Phillies at New York Mets MLB game preview for September 18, 2026
PHI
Philadelphia Phillies
Tim Mayza LHP
@
7:15 PM ET
Citi Field
NYM
New York Mets
Zac Thornton LHP
Last updated Friday, September 18, 2026
Final This game has finished. Read the recap for final score, model grades, and box score.

Key Facts

Matchup
Philadelphia Phillies at New York Mets
Date
Friday, September 18, 2026
First Pitch
7:15 PM ET
Venue
Citi Field
Probable Starters
Tim Mayza (LHP) vs Zac Thornton (LHP)
Lineups
Confirmed
Odds Snapshot
Sep 18, 7:16 PM ET
Last Updated
Sep 18, 6:22 PM ET

Betting Board

Snapshot Sep 18, 7:16 PM ET
Moneyline
PHI +112
NYM -117
Total
Over 8.5 -114
Under 8.5 -106
Run Line
PHI +1.5 -200
NYM -1.5 +164

Model Angles

NRFI Model
NRFI · 56%
+2.4% edge
Projected Total
5.1
model combined runs
Park Factor
0.92
Pitcher friendly · HR 0.86
First Pitch Weather
75°F
5.2 mph N
The Philadelphia Phillies visit the New York Mets at 7:15 PM ET at Citi Field. Probable starters: Tim Mayza for Philadelphia Phillies opposite Zac Thornton for New York Mets. 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: Tim Mayza (Philadelphia Phillies) vs Zac Thornton (New York Mets).
  • Lineup status: confirmed by both teams.
  • NRFI model: 56% probability, lean NRFI, +2.4% edge.

Pitching Matchup

PHI Away
Tim Mayza
LHP · 3-3 · 5 GS
ERA
3.06
WHIP
1.05
K/9
8.77
IP
64.2
Career: 3.74 ERA · 1.25 WHIP · 8.98 K/9
NYM Home
Zac Thornton
LHP · 4-5 · 13 GS
ERA
3.44
WHIP
1.16
K/9
6.75
IP
73.1
Career: 3.44 ERA · 1.16 WHIP · 6.75 K/9

On the season, Tim Mayza holds the ERA edge in this matchup. Tim Mayza carries a 3.06 ERA and 1.05 WHIP, while Zac Thornton sits at 3.44 ERA and 1.16 WHIP.
Strikeout rates: Tim Mayza at 8.77 K/9, Zac Thornton at 6.75 K/9.
K projections: Tim Mayza at 3.1 (line 4.0)
Zac Thornton projected at 3.8 (line 4.0).
Both starters throw from the L side, limiting platoon splits for either lineup.

Strikeout Projections

Tim Mayza vs NYM
Proj: 3.1Line: 4.0
-0.9
Confidence:
Zac Thornton vs PHI
Proj: 3.8Line: 4.0
-0.2
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.

Tim Mayza (Philadelphia Phillies) is projected for 3.1 strikeouts against a posted line of 4.0. The projection is close to the line with no actionable edge.
He faces a moderate-K lineup that strikes out at 23.0% with a 28.0% whiff rate.

Zac Thornton (New York Mets) is projected for 3.8 strikeouts against a posted line of 4.0. The projection is close to the line with no actionable edge.
He faces a moderate-K lineup that strikes out at 22.5% with a 28.0% whiff rate.

The New York Mets lineup is more vulnerable to strikeouts in this matchup. New York Mets batters K at 23.0%, Philadelphia Phillies batters at 22.5%.

NRFI & First 5 Analysis

NRFI Model
55.7%
probability of NRFI
+2.4%
market edge
Monitor
Market implied: 53.3%Model: 55.7%
First 5 Innings
2.8est. F5 runs
PHI
3.06 ERA
12.8 inn/start
NYM
3.44 ERA
5.6 inn/start
F5 lean: Even matchup
PHI K Projection
Tim Mayza
3.1proj
Line: 4.0
-0.9 NEUTRAL
Confidence
NYM K Projection
Zac Thornton
3.8proj
Line: 4.0
-0.2 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 55.7% probability of no runs in the first inning, compared to the market's implied probability of 53.3%.

  • That creates a slim 2.4% edge on NRFI.
  • The best available line is NRFI -114 / YRFI -106 at FanDuel.
  • Home plate umpire Paul Clemons runs a wide zone. See the umpire section below for full career data.
  • Our NRFI model sits at 158-146 (52.0%) on official picks this season.

Prop Edges

2 model signals detected
Hits
65.6%
Hits
69.9%
See all today's picks and edges

Lineup & Matchup Breakdown

Philadelphia Phillies Confirmed
K%: 22.5
2Trea TurnerRSS
3Bryce HarperLRF
Whiff rate: 28.0%Team page
New York Mets Confirmed
K%: 23.0
Whiff rate: 28.0%Team page
Batter vs Pitcher matchup tool

Lineups are confirmed as of this writing.

Philadelphia Phillies K vulnerability: 22.5% strikeout rate, 28.0% whiff rate.

New York Mets K vulnerability: 23.0% strikeout rate, 28.0% whiff rate.

Ballpark, Weather & Umpire

Citi Field
Run Factor0.92
HR Factor0.86
Full park profile
Home Plate Umpire
Paul Clemons
Wide NRFI: 33.3% 6 games
Full umpire profile
Hourly Game Forecast
75°
7 PM
5 mph
N
75°
8 PM
5 mph
N
75°
9 PM
5 mph
N
75°
10 PM
5 mph
N
  • Citi Field carries a 0.92 run factor (pitcher-friendly).
  • Home run factor: 0.86 — the park suppresses HR power.
  • Park notes: Very deep power alleys; High walls in LCF/RCF; Inspired by old Polo Grounds.

First pitch forecast: 75F with 5 mph winds from the N. Humidity: 54%.

  • Home plate umpire: Paul Clemons.
  • Career NRFI rate: 33.3% across 6 games tracked.
  • Zone tendency: Wide.
  • K factor: 0.885 (below average strikeouts in his games).

Run Projections & Total

  • Our projection model puts the total at 5.1 combined runs, with Philadelphia Phillies projected for 2.4 and New York Mets for 2.8.
  • That's 3.4 runs below the posted total of 8.5, suggesting a lean toward the Under.
  • The run projection favors New York Mets by 0.4 runs.
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.