Prediction Details

MLB Prediction: Tampa Bay Rays vs Washington Nationals (Sunday, August 31 at 01:35 PM ET)

Introduction

Updated

TB @ WSHTB -147WSH +125O/U 8.5
Market / Trend TB WSH
Moneyline -147 +125
Total (O/U) 8.5
Run Line -1.5 (113) +1.5 (-135)
Last 5 RPG 4.0 2.0
Record 65–69 53–81
Lines: BetMGM, BetOnline.ag, BetRivers, BetUS +7 more

More MLB picks: Tampa Bay Rays · Washington Nationals

Tampa Bay enters this interleague matchup with a 3-2 mark in its last five, while Washington has dropped five straight and averaged just 2.0 runs per game in that stretch. That type of inefficiency makes this MLB prediction particularly intriguing, as the Nationals’ bats have been quiet but remain capable of flipping momentum against a Rays team stuck in mediocrity. With both lineups showing uneven production, the sharper edge comes from targeting value rather than recent win streaks, setting the stage for a disciplined betting angle.

Game Time

Starts in 13h 57m

First pitch is set for Sunday, August 31 at 01:35 PM ET inside Nationals Park, the mound matchup drives outcomes.

Odds & Spread Line

  • Tampa Bay Rays: -147
  • Washington Nationals: +125

Total: 8.5

  • Run Line — Tampa Bay Rays: -1.5 (+113)
  • Run Line — Washington Nationals: +1.5 (-135)

Latest Team Records

Tampa Bay Rays: 65-69 (Win %: 0.485)
Washington Nationals: 53-81 (Win %: 0.396)

Injury Report

Both teams are currently healthy with no major injury concerns.

Key Player Stats

Tampa Bay Rays

  • Junior Caminero: 0.258 AVG, 39 HR, 94 RBI
  • Yandy Diaz: 0.287 AVG, 22 HR, 74 RBI
  • Brandon Lowe: 0.264 AVG, 27 HR, 67 RBI

Washington Nationals

  • James Wood: 0.26 AVG, 26 HR, 83 RBI
  • CJ Abrams: 0.27 AVG, 17 HR, 53 RBI
  • Luis Garcia Jr.: 0.26 AVG, 11 HR, 55 RBI

Team Analysis

Tampa Bay Rays

Tampa Bay Rays’ 65-69 record reflects a team stuck in the middle tier, unable to string together extended momentum. Their last 5 games at 3-2 (4.0 RPG) show modest stability but no dominant surge, leaving them vulnerable to slipups on the road. Junior Caminero has been a power anchor, yet the inconsistency around him has prevented Tampa Bay from capitalizing fully on his production.

The Rays’ road form at 32-36 is a key weakness, and the team’s last 10 games at 5-5 (4.8 RPG) highlight a lack of separation. Yandy Diaz has provided steady contact, but the lineup’s rhythm fades when support behind him goes quiet. Brandon Lowe adds occasional bursts of power, but the overall offensive profile remains too uneven to trust away from home against a hungry Washington side.

  • Batting Average: 0.251
  • Total Runs Scored: 600
  • Home Runs: 151
  • OBP: 0.314
  • SLG: 0.402
  • OPS: 0.715
  • ERA: 3.94
  • WHIP: 1.21

Away Record: 32-36 • Home Record: 34-33
Last 5 Games: 3-2 (4.0 RPG)
Last 10 Games: 5-5 (4.8 RPG)


Washington Nationals

Washington Nationals’ 53-81 mark signals a rough season overall, but their current slump is defined by a 0-5 stretch with just 2.0 RPG. Despite the drought, James Wood remains capable of sparking an offense that has shown flashes of balance at home. The Nationals’ home record of 26-41 is underwhelming, yet it provides enough opportunity to rebound against a Rays lineup that has not traveled well.

Across their last 10 games, the Nationals sit at 3-7 (3.5 RPG), an output below league average but not unsalvageable. CJ Abrams brings an element of speed and gap power that can pressure opposing defenses, while Luis Garcia Jr. delivers steady run production even in losing efforts. With Tampa Bay winning the first two matchups of the series, the Nationals’ urgency to avoid a sweep creates a betting edge in this spot.

  • Batting Average: 0.244
  • Total Runs Scored: 566
  • Home Runs: 126
  • OBP: 0.309
  • SLG: 0.387
  • OPS: 0.696
  • ERA: 5.37
  • WHIP: 1.45

Away Record: 27-41 • Home Record: 26-41
Last 5 Games: 0-5 (2.0 RPG)
Last 10 Games: 3-7 (3.5 RPG)


Head-to-Head History

Tampa Bay Rays lead 2–0 (Last 2 games)

  • August 30, 2025: TB 4 @ WSH 1
  • August 29, 2025: TB 4 @ WSH 1

Over/Under Trends

Tampa Bay Rays’ last 10 games have averaged 9.1 total runs, with 6 games that would have cleared today’s total of 8.5.

Washington Nationals’ last 10 games have averaged 8.9 combined runs, with 6 games clearing the same number of 8.5.

Moneyline Betting Prediction

Despite recent struggles, the Nationals’ urgency at home, paired with contributions from James Wood and CJ Abrams, makes them the sharper side. Tampa Bay Rays’ weak road splits and inability to separate in recent form create the opening for Washington to respond with a needed win.

We’re backing the Washington Nationals at +125 as the value side.

Over/Under Prediction

Last five form shows the Washington Nationals at 2.0 RPG and the Tampa Bay Rays at 4.0, giving context for the number.

These teams are combining for 6.0 runs per game recently — below the posted total of 8.5. That points toward the Under 8.5.

Bookmakers

Shop the MLB odds at: FanDuel, MyBookie.ag, LowVig.ag, Fanatics, BetOnline.ag, Caesars, DraftKings, Bovada, BetUS, BetMGM, BetRivers.

Parlamaz may earn affiliate commissions from links in this article.

MLB Predictions FAQ

How often are picks updated?

Daily. We update for confirmed lineups, injuries, and market moves. Check back near first pitch for final notes.

What do moneyline, run line, and total mean?

Moneyline is who wins the game. Run line is a spread, usually ±1.5 runs. The total (over/under) is combined runs by both teams.

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.