Prediction Details

MLB Prediction: Washington Nationals vs Miami Marlins (Tuesday, September 9 at 06:40 PM ET)

Introduction

Updated

WSH @ MIAWSH -101MIA -120O/U 9.0
Market / Trend WSH MIA
Moneyline -101 -120
Total (O/U) 9.0
Run Line +1.5 (-195) -1.5 (170)
Last 5 RPG 7.6 4.4
Record 59–84 66–78
Lines: BetMGM, BetOnline.ag, BetRivers, BetUS +7 more

More MLB picks: Washington Nationals · Miami Marlins

Washington rides into this matchup on a 4-1 run across its last five, averaging 7.6 runs per game, while Miami has struggled at 1-4 over the same stretch. That contrast sets the stage for a sharp MLB prediction where the Nationals’ hot bats meet a Marlins lineup that has still produced 12.6 combined runs per game in their last 10 contests. With the Marlins showing stronger season-long balance and more reliable home metrics, the betting edge points squarely toward Miami and an Over outcome.

Game Time

Starts in 8h 32m

Taking place at Tuesday, September 9 at 06:40 PM ET inside pitcher-friendly loanDepot Park with controlled scoring.

Odds & Spread Line

  • Washington Nationals: -101
  • Miami Marlins: -120

Total: 9

  • Run Line — Washington Nationals: +1.5 (-195)
  • Run Line — Miami Marlins: -1.5 (+170)

Latest Team Records

Washington Nationals: 59-84 (Win %: 0.413)
Miami Marlins: 66-78 (Win %: 0.458)

Injury Report

Both teams are currently healthy with no major injury concerns.

Key Player Stats

Washington Nationals

  • James Wood: 0.258 AVG, 27 HR, 87 RBI
  • CJ Abrams: 0.267 AVG, 17 HR, 53 RBI
  • Luis Garcia Jr.: 0.263 AVG, 13 HR, 61 RBI

Miami Marlins

  • Kyle Stowers: 0.288 AVG, 25 HR, 73 RBI
  • Otto Lopez: 0.249 AVG, 14 HR, 70 RBI
  • Agustin Ramirez: 0.226 AVG, 19 HR, 60 RBI

Team Analysis

Washington Nationals

Washington Nationals’ 4-1 surge in its last five games has been fueled by aggressive scoring, with the lineup generating 7.6 runs per game in that stretch. James Wood’s power production has been a consistent spark, ensuring the Nationals remain dangerous even against stronger pitching staffs. While their season record remains poor overall, the Nationals’ current form shows a team capable of testing opponents offensively.

On the road, however, Washington has struggled across the season with only 30 wins in 72 attempts, highlighting a lack of consistency away from home. CJ Abrams has added timely offense, but run prevention issues continue to undermine extended success. Luis Garcia Jr. contributes steady contact hitting, yet the Nationals’ pitching profile leaves them vulnerable when facing disciplined lineups like Miami Marlins’.

  • Batting Average: 0.245
  • Total Runs Scored: 616
  • Home Runs: 138
  • OBP: 0.309
  • SLG: 0.391
  • OPS: 0.699
  • ERA: 5.3
  • WHIP: 1.43

Away Record: 30-42 • Home Record: 29-42
Last 5 Games: 4-1 (7.6 RPG)
Last 10 Games: 6-4 (5.1 RPG)


Miami Marlins

Miami Marlins’ 1-4 mark over its last five games reflects a dip, but the offense continues to post 4.4 runs per game in that span, keeping them competitive. Kyle Stowers has been the most reliable source of production, and his consistency helps stabilize the lineup even during losing streaks. The Marlins’ season record sits stronger than Washington Nationals’, and their lineup depth positions them well to exploit Washington Nationals’ weak pitching staff.

At home, Miami has logged 32 wins, and the power contributions from Otto Lopez and Agustin Ramirez make this team more dangerous in front of its own crowd. While their recent struggles underline inconsistency, the Marlins’ offensive ceiling and balanced approach give them the upper hand against a Nationals team that falters on the road. With the ability to string together big innings, Miami is well positioned to rebound and cover the offensive load needed to win outright.

  • Batting Average: 0.25
  • Total Runs Scored: 623
  • Home Runs: 137
  • OBP: 0.314
  • SLG: 0.393
  • OPS: 0.707
  • ERA: 4.79
  • WHIP: 1.32

Away Record: 34-38 • Home Record: 32-40
Last 5 Games: 1-4 (4.4 RPG)
Last 10 Games: 3-7 (4.9 RPG)


Head-to-Head History

Tied 4–4 (Last 8 games)

  • September 08, 2025: WSH 15 @ MIA 7
  • September 03, 2025: MIA 5 @ WSH 10
  • September 02, 2025: MIA 2 @ WSH 5
  • September 01, 2025: MIA 0 @ WSH 2
  • June 15, 2025: MIA 3 @ WSH 1
  • June 14, 2025: MIA 4 @ WSH 3
  • June 13, 2025: MIA 11 @ WSH 9
  • April 13, 2025: WSH 4 @ MIA 11

Over/Under Trends

Washington Nationals’ last 10 games have averaged 9.5 total runs, with 4 games that would have cleared today’s total of 9.

Miami Marlins’ last 10 games have averaged 12.6 combined runs, with 5 games clearing the same number of 9.

Moneyline Betting Prediction

Despite Washington Nationals’ recent surge, Miami Marlins’ stronger season-long record, deeper lineup led by Kyle Stowers, and proven ability to produce at home establish them as the sharper side. With the Nationals vulnerable on the road and Marlins’ offense supported by multiple contributors, Miami is the clear moneyline play to take control of this matchup.

Form and matchup edges favor the Miami Marlins — back them.

Over/Under Prediction

Recent five-game scoring: the Miami Marlins are at 4.4 RPG and the Washington Nationals at 7.6 — a useful baseline against the total.

These teams are combining for 12.0 runs per game recently — above the posted total of 9.0. That points toward the Over 9.0.

Bookmakers

Odds courtesy of: FanDuel, Fanatics, LowVig.ag, BetOnline.ag, Caesars, MyBookie.ag, BetRivers, Bovada, BetMGM, BetUS, DraftKings.

Parlamaz may earn affiliate commissions from links in this article.

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How does Parlamaz make Washington Nationals vs Miami Marlins MLB predictions?

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John Tamburino

John TamburinoVerified

Lead Analyst — data-first, former college baseball.

John Tamburino grew up on travel baseball and three years of varsity basketball, then played college baseball before shifting to analytics. He still watches everything—from weekday tennis to all major league sports—and will never forget the Diamondbacks’ World Series run. At Parlamaz, John blends trusted data feeds with matchup context to find real value—no fluff, no paywalls.