Seattle Mariners Focus Offseason Search on Right-Handed Bats and Roster Flexibility

The Seattle Mariners are heavily prioritizing offensive upgrades this offseason, with a specific focus on adding two right-handed bats and addressing defensive flexibility. According to reports from Adam Jude and Ryan Divish of The Seattle Times, the club is evaluating multiple paths to reshape its lineup following the expected departure of Randy Arozarena. Versatile infielder Brendan Donovan remains a factor in these plans, though his durability was limited to just 39 games last season due to multiple trips to the injured list for groin issues and a concussion.

When healthy, Donovan has maintained solid production at the plate, posting a .277/.371/.409 slash line in his 159 plate appearances. While the team could utilize him in left field next year to accommodate infield changes, defensive metrics present a complicated picture after he struggled at third base during the 2026 campaign. Alternatively, the club could pursue a traditional corner outfielder from an open market that includes free-agent targets like Seiya Suzuki and Ian Happ. While Jon Morosi of MLB Network reported Seattle's interest in Happ, other reports suggest the switch-hitter and NPB star Teruaki Sato are currently considered unlikely fits.

Beyond free agency, the trade market remains a viable avenue for Seattle, particularly given the organization's surplus of starting pitching depth. The club navigated an awkward six-man rotation and various piggyback scenarios last season due to an abundance of arms. Addressing these roster configurations could allow president of baseball operations Jerry Dipoto to leverage pitching depth to secure much-needed offensive help before spring training.