The Washington Nationals close out their weekend series in South Florida on Sunday afternoon, sending rookie left-hander Jackson Kent to the mound against Miami’s Janson Junk. The Marlins sit as a modest home favorite on the moneyline, yet the run line has quietly drifted toward the visitors despite heavy public support for Miami. That gap between where the tickets are and where the number is moving points our headline lean toward the road side.
Last Updated: Sunday, August 23, 2026
Washington Nationals vs. Miami Marlins — Time & How to Watch
| Where | loanDepot park, Miami, FL |
| When | Sunday, August 23 — 1:40 PM ET |
| TV | Marlins.TV and Nationals.TV |
Washington Nationals vs. Miami Marlins Betting Preview
The pitching matchup sets the tone here, and it is a study in contrasts. Miami hands the ball to Janson Junk, who carries a 6-8 record and a 4.37 ERA across 92.2 innings, with 66 strikeouts against 26 walks. Junk is a strike-thrower, but he is hittable. Opponents are batting .275 against him this season. Washington has given him particular trouble over his career, tagging him for a 5.63 ERA across three starts and 16 innings while hitting .274 with a .797 OPS against him.
Washington counters with rookie left-hander Jackson Kent, who made his MLB debut on August 12 and owns a 0-1 record with a 9.39 ERA through his first two starts. That number looks alarming, but the sample is tiny. Kent arrived with a strong minor-league strikeout profile and a four-pitch mix headlined by a mid-90s fastball. The upside is real, yet so is the risk. Rookies making their third career start against a big-league lineup carry command questions that a surface ERA cannot settle. See the full probable starters for the slate.
Neither club is chasing October. Miami enters at 65-64, hovering right around .500 in the middle of the NL East. Washington sits at 61-69, entrenched near the bottom of the division. Both offenses rank in the lower half of the league in run production, and both starters project to exit somewhere in the middle innings. That combination of two modest lineups and two exit-prone starters shapes every angle below.
Washington Nationals vs. Miami Marlins Odds
| Run Line | Moneyline | Total | |
|---|---|---|---|
| Nationals | +1.5 (-160) | +134 | U 8 (+100) |
| Marlins | -1.5 (+135) | -160 | O 8 (-120) |
Odds accurate as of Sunday, August 23, 2026 via TheSpread.com. Odds change, get the latest MLB Odds – Futures – Props
Washington Nationals vs. Miami Marlins — Who Is the Public Betting?
| Nationals | 21% | 79% | Marlins |
See the latest MLB Public Betting Splits and make smarter wagers!
Nationals vs. Marlins Prediction — Is the Public Loading Up on the Wrong Side?
Here is where the market gets interesting. The public is piled onto Miami, with 79 percent of run-line bets and 81 percent of moneyline tickets backing the home team. Normally that kind of lopsided support nudges a favorite’s price higher. Instead, the number has crept the other way. Miami opened at -162 on the moneyline and now sits at -160. On the run line, Washington’s +1.5 has moved from -150 up to -160, while Miami’s -1.5 has drifted from +130 out to +135.
That is reverse line movement. When the tickets pour in on one side but the price moves toward the other, it signals that the larger, sharper money is landing on the less popular team — in this case, the Nationals. The baseball case backs it up. Junk has been vulnerable to this Washington lineup before, and the game projects tight, which is exactly the environment where a road underdog’s 1.5-run cushion holds its value. Miami is also a home favorite, and home favorites are a poor bet at -1.5. When the home side takes the lead in the ninth, the game simply ends, and one-run walk-off wins push the visitors’ run line.
The counter-case is straightforward. Kent’s 9.39 ERA is not a mirage, and a rookie can unravel quickly. If Miami’s bats get to him early and Junk settles in, the Marlins can win comfortably and cover the -1.5. Still, the sharp-money signal, the favorable game script, and the run-line math on a road dog stack up cleanly on one side.
The Pick: Nationals Run Line +1.5 (-160)
Nationals vs. Marlins Prediction — Does the Long Price Offer Real Value?
The same reverse line movement that props up the run-line lean also opens a door to a more aggressive angle. If the sharper money genuinely believes Washington is live here, then a plus-money price on the Nationals to win outright carries real value. At +134, the market implies roughly a 43 percent chance Washington wins. One projection model actually favors the Nationals outright, and Junk’s track record against this lineup does nothing to shrink that number. For a game this close on paper, that price looks generous.
The honest caveat is the arm on the mound. Backing the moneyline means trusting a volatile rookie to keep Miami in check for five-plus innings, and that is a bigger ask than simply needing a one-run cushion. This is the higher-risk, higher-reward expression of the same read. Bettors who want the cleaner path should stick with the run line above, while those chasing the better return can take the plus price.
The Pick: Nationals Moneyline (+134)
Final Thoughts and Bonus Angle
The total is worth a look for a bonus angle. The number sits at 8, and loanDepot park has long played as one of the more pitcher-friendly venues in the majors thanks to its deep dimensions and controlled, roofed environment. Pair that with two below-average offenses, and the under has a sturdy foundation. We flagged a comparable under angle in our recent MLB coverage. The pushback is obvious: two shaky starters can turn any game into a track meet, and the market has nudged the over juice from -115 to -120. That makes this a lean rather than a conviction play, but the park and the lineups tilt the value toward the under.
To recap the card: the Nationals run line +1.5 (-160) is the anchor, backed by clear reverse line movement and favorable run-line math on a road dog. The Nationals moneyline (+134) is the higher-value version of that same lean. And the under 8 (+100) is a bonus built on the venue and two quiet offenses. Every one is a read, not a lock, with a live counter-case worth respecting. For more plays across the slate, check our latest MLB predictions.
MLB Nationals vs. Marlins FAQ: Sunday August 23, 2026
What time does the Nationals vs. Marlins game start?
First pitch is set for 1:40 PM ET on Sunday, August 23, 2026, at loanDepot park in Miami, Florida. It is the finale of the three-game weekend series between the two NL East clubs and a daytime getaway game for both teams.
What channel is the Nationals vs. Marlins game on?
The game streams on Marlins.TV and Nationals.TV, the direct-to-consumer platforms carrying each club’s local broadcast. Miami’s feed runs through Marlins.TV, while Washington viewers can follow along on Nationals.TV for the Sunday afternoon matchup from loanDepot park.
Who is pitching for the Marlins on Sunday?
Right-hander Janson Junk starts for Miami. He enters with a 6-8 record and a 4.37 ERA over 92.2 innings this season, striking out 66 while walking 26. Junk pounds the strike zone but has been hittable, with opponents batting .275 against him.
Who is pitching for the Nationals on Sunday?
Rookie left-hander Jackson Kent gets the ball for Washington. He made his MLB debut on August 12, 2026, and carries a 0-1 record with a 9.39 ERA through his first two starts. Kent brings a mid-90s fastball and a deep pitch mix, though his big-league sample remains very small.