The Seattle Mariners' 2026-2027 off-season tracker is underway, with the team preparing for the upcoming season after a September 27, 2026 game against the Los Angeles Angels at T-Mobile Park in Seattle, Washington. A photo from that game shows an empty stadium prior to first pitch.
The tracker, compiled by Kate Preusser for SB Nation, will monitor roster moves, free agency, and trades as the Mariners shape their roster for the 2027 campaign.
