The Seattle Mariners' 2026-2027 off-season tracker has been launched, monitoring the team's moves ahead of the next MLB season. A photo from September 27, 2026, shows an empty T-Mobile Park prior to a game against the Los Angeles Angels, marking the end of the previous campaign. The tracker, authored by Kate Preusser for SB Nation, will document roster changes, free-agent signings, trades, and other transactions as the franchise prepares for the upcoming season.
Seattle Mariners 2026-2027 Off-Season Tracker Begins



