Seattle Mariners vs. Washington Nationals, Picks and Prediction, Friday, June 12, 2026
Use Code WWWC Seattle (36-33) will be trying to increase their division lead when they visit Nationals Park on Friday night to face Washington (35-34) in the first game of their three-game interleague series at 6:45 PM. ET. Read on to find out which team picks up the win in this Mariners vs. Nationals prediction. Don’t go down on strikes! Get our top MLB Predictions and increase your bankroll!
Bryce Miller, 2-0, 1.33 ERA, will get the start for the Mariners. The Nationals will counter with Zack Littell, 6-4, 4.76 ERA.
Washington is 7-3 in its last 10 games against Seattle.
**This preview was written before Thursday’s game was played.**
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Mariners Going For Fourth Win In Six Games
The Mariners played well over the past week, and they’ve won three of their last five games. They are on top of the AL West standings, two games ahead of the Rangers, and will try to increase their division lead with a win on Friday.
Seattle averages 4.23 runs per game, which is 20th in the league. Their .237 batting average is 23rd in the league. Their .317 on base percentage is 17th, while their .396 slugging percentage is 11th.
Randy Arozarena leads the Mariners with a .294 batting average and 33 RBI, while Luke Raley leads the team with 13 home runs.
Seattle is giving up 3.83 runs per game, which is fifth in the league. Opponents have a .241 batting average against the Mariners, which is 16th in the league. Their 3.54 ERA is fifth, while their 1.19 WHIP is fourth.
In his last start, Miller gave up one hit and no runs in six innings, leading to a 4-0 win over Detroit.
Nationals Going For Third Consecutive Series Win
The Nationals bounced back from their series loss to Miami with series wins over Arizona and San Francisco. They will try to keep the momentum going and pick up their third straight series win when they play the Mariners.
Washington averages 5.39 runs per game, which leads the league. Their .246 batting average is 11th in the league. Their .323 on base percentage is 10th, while their .419 slugging percentage is fifth.
CJ Abrams leads the Nationals with a .287 batting average and 51 RBI, while James Wood leads the team with 18 home runs.
Washington is giving up 5.29 runs per game, which is 29th in the league. Opponents have a .255 batting average against the Nationals, which is 26th in the league. Their 4.66 ERA is 25th, while their 1.39 WHIP is 23rd.
In his last start, Littell gave up two hits and one run in five innings, leading to a 6-1 win over Arizona. He is 0-1 with a 1.93 ERA in three games against the Mariners.
Mariners vs. Nationals Picks
Money Line Pick for Mariners vs. Nationals
- Seattle Mariners ML (4 Units)
The Mariners have the edge here because they’re playing well offensively, and scored more than five runs in two of their last three road games. They’ve had a lot of success against right-handers. Even though Littell gave up only four runs in his last two road starts, the Nationals have one of the worst bullpens in the league, and they’re not playing very well at the moment, so expect them to have a hard time slowing down the Mariners.
The Nationals will have a hard time keeping up offensively because they have struggled in recent home games, scoring 11 runs in their last four home games. Things won’t get easier for them because they’re going up against Miller, who has been dominant on the mound this season and has not given up a run in his last three starts. He gave up two runs in his last three road starts and will keep Washington’s offense in check. Take Seattle on the money line.
Over/Under Pick for Mariners vs. Nationals
- Under (4 Units)
The Mariners average 4.23 runs per game. They’re batting .247 against right-handers, and they’re facing a starter who gave up four runs in his last three starts. The Nationals average 5.39 runs per game. They’re batting .237 against right-handers, and they’re facing a starter who gave up two runs in his last three road starts. Don’t expect these teams to score enough runs to push the score over the total.
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