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Nationals vs Cardinals Prediction, Picks, Best Bets & Parlay

Free MLB prediction and picks for Friday, September 18, 2026 · powered by DataStreak

AWAY

Washington Nationals

67-81 · L7

HOME

St. Louis Cardinals

72-75 · L3

Nationals vs Cardinals Prediction

Nationals and Cardinals both come in cold. Someone has to break the streak — sportsbooks priced that in too.

Prop angles are where the edge lives. Live odds, current streaks, and the picks our partner DataStreak likes are all below.

Nationals vs Cardinals Picks

Books have not posted player props for WSH at STL yet. Lines usually go up a few hours before first pitch or tip-off; check back closer to game time. See all of today’s free picks across the slate.

Injury Report

17 listed

JUST IN: Ken Waldichuk 15-day-il → 60-Day IL (Elbow) · Mitchell Parker 15-day-il → 60-Day IL (Elbow) · Richard Lovelady 15-day-il → 60-Day IL (Triceps) · PJ Poulin 15-day-il → 60-Day IL (Forearm) · Connelly Early 15-day-il → 60-Day IL (Elbow) · Drew Millas 10-day-il → 60-Day IL (Finger) · Blaze Jordan day-to-day → 10-Day IL (Ankle) · JJ Wetherholt day-to-day → 10-Day IL (Wrist) · Everson Pereira out → 10-Day IL (Hand) · Hunter Dobbins day-to-day → 15-Day IL (Elbow) · Masyn Winn 10-day-il → Day To Day (Thumb)

WSH

Ken Waldichuk
Elbow
60-Day IL
Mitchell Parker
Elbow
60-Day IL
Richard Lovelady
Triceps
60-Day IL
PJ Poulin
Forearm
60-Day IL
Connelly Early
Elbow
60-Day IL
Drew Millas
Finger
60-Day IL
DJ Herz
Elbow
60-Day IL
Nasim Nunez
Personal
Bereavement
Matt Waldron
Chest
15-Day IL
Orlando Ribalta
Forearm
15-Day IL

STL

Max Rajcic
Elbow
60-Day IL
Blaze Jordan
Ankle
10-Day IL
JJ Wetherholt
Wrist
10-Day IL
Everson Pereira
Hand
10-Day IL
Hunter Dobbins
Elbow
15-Day IL
Peter Strzelecki
Forearm
15-Day IL
Masyn Winn
Thumb
Day To Day

Team Trends

Washington Nationals

• Washington Nationals 35-38 ATS at home this season
• Washington Nationals 63-52 ATS as an underdog

Season ATS: 80-68 ATS
L10 ATS: 5-5 L10 ATS
L5 ATS: 3-2 L5 ATS
Home ATS: 35-38 home ATS
Road ATS: 45-30 road ATS
As Fav: 17-16 ATS as favorite
As Dog: 63-52 ATS as dog
L10 O/U: 6-3-1 O/U
L10 SU: 2-8

St. Louis Cardinals

• St. Louis Cardinals 15-30 ATS as a favorite this season
• St. Louis Cardinals 64-36 ATS as an underdog
• The over has hit in 8 of the last 10

Season ATS: 79-68 ATS
L10 ATS: 6-4 L10 ATS
L5 ATS: 2-3 L5 ATS
Home ATS: 37-35 home ATS
Road ATS: 42-33 road ATS
As Fav: 15-30 ATS as favorite
As Dog: 64-36 ATS as dog
L10 O/U: 8-2 O/U
L10 SU: 4-6

Head-to-Head

STL 3-2 over WSH (2-1 ATS)

Date	Matchup	Score	Winner
2026-04-08	STL @ WSH	6–1	STL
2026-04-07	STL @ WSH	7–6	STL
2026-04-06	STL @ WSH	6–9	WSH
2025-07-10	WSH @ STL	1–8	STL
2025-07-09	WSH @ STL	8–2	WSH

Picks, parlays, injuries, trends, and matchup context powered byDataStreak

The Final Word

The picks below have streaks behind them and odds attached to them. That's all we need.

Nationals vs Cardinals FAQ

Where can I find free Nationals vs Cardinals picks for Friday, September 18, 2026?

Today's algorithmic plays didn't include Nationals vs Cardinals, but our full free MLB picks page covers every matchup that did clear the quality bar.

What's the prediction for Nationals vs Cardinals?

Our prediction is built from team form (records, recent results, win/loss streaks), live moneyline and spread odds across major US books, and DataStreak's algorithmic player-prop research. Every claim on this page is data-backed — no hot takes.

Are these Nationals vs Cardinals best bets really free?

Yes. Every prediction, pick, and parlay on this page is free, no signup, no paywall.

How is The Cover different from Covers, ATS, or pay-for-pick services?

Three things. (1) Free, full stop — every page, every day. (2) Picks are algorithmic with transparent quality bars (8+ game streak, 75%+ hit rate over 20 games), not opinion columns. (3) Modern UX: live odds, push notifications, comments, mobile-first PWA install.