Seattle Mariners vs Washington Nationals Live Stream: How to Watch MLB

The Nationals will look to steal another game from the Mariners on Sunday afternoon as the teams close out their series in Washington D.C.

The Seattle Mariners will close out their 10-game road trip on Sunday afternoon when the team takes on the Washington Nationals in the finale of their weekend series at Nationals Park. The Mariners come into Sunday afternoon’s game with a record of 37-35 so far this season, which has them sitting in first place in the American League West standings. The Nationals are sitting in third place in the National League East standings with a record of 36-35, putting them 10.5 games behind the leading Braves. While the season approaches its midway point, the teams will both look to tack on a win on Sunday afternoon to gain momentum before the All-Star break.

How to Watch Seattle Mariners vs Washington Nationals Today:

Game Date: Sunday, June 14, 2026

Game Time: 1:35 p.m. ET

TV: MLB.TV – Washington Nationals, Seattle Mariners, Washington Nationals

Location: Nationals Park

Live stream the Seattle Mariners vs Washington Nationals game on Fubo: Start watching now!

The Mariners opened their series against the Nationals with a 10-2 win on Friday night before falling 8-3 in Saturday night’s game. The loss was credited to Luis Castillo on the mound after giving up two earned runs in his 5.2 innings, striking out four batters along the way. Mitch Garver brought in Seattles first run with an RBI single in the top of the fifth before Colt Emerson hit his sixth home run of the season to plate himself and Garver, making it a 3-3 tie. The Nationals pulled away after that and Seattle could not find an answer for it.

Cade Cavalli improved to 4-4 on the season with Saturday night’s win, throwing for five innings and striking out five batters. Offensively, Washington was led by CJ Abrams who went 3-for-4 at the plate with two RBI. Abrams brought the team’s first run home with an RBI single in the bottom of the first and struck again in the bottom of the seventh with another RBI single. Luis García Jr. hit his ninth home run of the year to take the lead in the fifth and it stood for the remainder of the game.

The Mariners will look to right-handed pitcher Emerson Hancock on Sunday afternoon while Washington will give the start to Miles Mikolas. Hancock brings a record of 5-2 and an ERA of 2.74 into Sunday’s game while Mikolas is currently 1-5 with an ERA of 5.90.

What Time Is Seattle Mariners vs Washington Nationals Game On?

The Seattle Mariners vs Washington Nationals game takes place on Sunday, June 14, 2026 at 1:35 p.m. ET. Tune in and catch some great MLB baseball action.

What Channel Is The Seattle Mariners vs Washington Nationals Game On?

Looking to watch this game? Fans can tune into MLB.TV – Washington Nationals, Seattle Mariners, Washington Nationals to see the action. Make sure you subscribe to Fubo now to watch this matchup, as well as numerous other sports leagues.

Watch the Seattle Mariners vs Washington Nationals game on Fubo: Start watching now!

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