The Mariners announced their starting lineup for the matchup at the Orioles on June 9, 2026, through MLB.com’s official video page for the game. The post is presented as a lineup update tied to the Seattle club’s visit to Baltimore, with the matchup framed under the Mariners’ video section on the league’s site.
The reference page identifies the content as “Starting lineups for Mariners at Orioles – June 9, 2026” and links it directly to the Seattle Mariners’ official MLB channel. It also shows the game context through the Orioles road setting, with the venue listed as T-Mobile Park in the page metadata and the video hosted by MLB Film Room, powered by Google Cloud.
The page does not publish the lineup names in text, but it clearly signals that the starting lineups were the focus of the segment. As an official MLB production, the post serves as the primary source for fans looking for the pregame batting order and the on-field setup for the Mariners-Orioles game.
The page metadata also confirms the Mariners branding, including the team name, club identifier, and official social handles. For viewers following Seattle’s pregame coverage, the lineup clip is part of MLB’s standard game-day presentation, giving a quick official look at how the Mariners were set to open against Baltimore.
