Washington Nationals @ Miami Marlins Prediction – August 23, 2026
The Washington Nationals travel to Miami to take on the Marlins in an interleague National League East showdown on August 23, 2026. The WP Baseball Predictor model has weighed the pitching matchup, team performance metrics, and injury situations — and it lands firmly on the Miami Marlins moneyline as its selection for this contest.
Starting Pitcher Matchup: Kent vs. Junk
The pitching matchup is where this game's story begins — and it tells a clear tale heading into Sunday's first pitch at loanDepot park.
Jackson Kent (Washington Nationals)
Jackson Kent takes the mound for Washington carrying an xFIP of 5.51, a number that raises legitimate concerns about his ability to suppress runs at an efficient rate. Expected Fielding Independent Pitching is a strong predictive metric that strips out defense and focuses on what a pitcher can control — strikeouts, walks, and home runs allowed. An xFIP north of 5.00 signals that Kent has been vulnerable to hard contact and free passes, making him a liability in a game where the Nationals desperately need a quality start.
Janson Junk (Miami Marlins)
On the other side, Marlins right-hander Janson Junk enters with an xFIP of 4.17 — a full 1.34 points better than his counterpart. That gap is significant at the major league level and suggests Junk has been a considerably more reliable and efficient pitcher when it comes to the underlying skills that drive sustained success. With Junk projected to limit damage and Kent projected to struggle, the pitching edge belongs decisively to Miami.
Why the WP Model Favours the Marlins
The WP Baseball Predictor assigns Miami a 64.6% win probability in this matchup, compared to just 35.4% for Washington. While this does not classify as a "strong favourite" scenario, it represents a meaningful edge driven by several compounding factors.
The Marlins' team-wide pitching metrics back up the model's lean. Miami owns a team FIP of 4.07 and a team ERA of 3.92, both of which significantly outpace Washington's team FIP of 4.82 and team ERA of 4.67. On the offensive side, the Nationals hold a slight edge with a team wOBA of 0.326 versus Miami's 0.317, but that edge is not large enough to overcome the sizeable pitching and starting rotation disadvantage Washington faces in this spot.
Injury Report: Key Absences to Watch
Injuries add another layer of complexity to this matchup, with both rosters dealing with notable absences.
Washington Nationals Injuries
- Drew Millas – Finger (10-Day IL)
- Eriq Swan – Undisclosed (7-Day IL)
- James Wood – Oblique (10-Day IL)
The absence of James Wood is particularly notable for Washington. An oblique injury sidelining a key offensive contributor weakens the Nationals' lineup depth at a critical stretch of the season.
Miami Marlins Injuries
- Aiva Arquette – Thumb (7-Day IL)
- Anthony Bender – Lower Leg (15-Day IL)
- Nick Brink – Undisclosed (7-Day IL)
- Dillon Lewis – Wrist (7-Day IL)
- Max Meyer – Neck (15-Day IL)
Miami's injury list is longer, with bullpen depth a legitimate concern given the absences of Anthony Bender and Nick Brink. Should Junk depart early, the Marlins' relief options may be stretched. Nevertheless, the model still favours Miami given the starting pitching advantage and stronger overall team metrics.
Dark Horse Home Run Picks
Every game has a wildcard, and these two hitters are worth monitoring for long-ball potential on August 23rd.
Nationals Dark Horse: Abimelec Ortiz
Keep an eye on Abimelec Ortiz for Washington. With James Wood sidelined, Ortiz may see elevated lineup opportunities, and he carries the raw power profile to punish a mistake pitch from Junk in a spot start situation.
Marlins Dark Horse: Griffin Conine
Griffin Conine is the WP dark horse pick on the Miami side. Conine's power bat could be a factor against a struggling Kent, particularly if the Nationals' starter gets into early pitch-count trouble and leaves a fastball over the heart of the zone.
Final Prediction
The WP Baseball Predictor model selects the Miami Marlins moneyline on August 23, 2026. With a superior starting pitcher in Janson Junk (xFIP: 4.17) taking on a vulnerable Jackson Kent (xFIP: 5.51), stronger team-wide pitching metrics across the board, and a 64.6% model-assigned win probability, Miami is the clear analytical choice in this NL East interleague contest.