The Mariners’ season ended with heartbreak in Game 7 of the ALCS versus the Blue Jays, and they’ll now turn their focus to an offseason aimed at building upon what was clearly a World Series-caliber roster (even if they fell just short). They’ll be faced with several key free agent departures — Eugenio Suarez, Josh Naylor and Jorge Polanco chief among them. Per both Daniel Kramer of MLB.com and Adam Jude of the Seattle Times, Naylor is the team’s top priority among all of its potential free agents.
The 28-year-old Naylor (29 next June) was outstanding after being acquired in a deal sending young pitchers Ashton Izzi and Brandyn Garcia back to Arizona. Already in the midst of a nice season with the D-backs (.292/.360/.447), Naylor found another gear in the Emerald City, erupting for a .299/.341/.490 slash (137 wRC+) and astonishingly stealing nearly as many bases (19) in 54 games as he had in his entire career prior (25).
In many ways, Naylor embodies the approach the Mariners have sought in recent offseasons where improving the club’s contact skills has been a goal (one that’s largely eluded them). He punched out in only 13.7% of his plate appearances this year (16.2% with the Mariners) and carries just a 15.2% strikeout rate dating all the way back to 2020. He’s not a traditional slugging first baseman, but Naylor is typically good for around 20 homers per seasons — he hit nine in his 54 games with the M’s — and does have a 31-homer campaign on his résumé with the 2024 Guardians.
Heading into his age-29 season and coming off a career-best year with no qualifying offer attached — he’s ineligible to receive one after being traded midseason — Naylor will be a hot commodity in free agency. In president of baseball operations Jerry Dipoto’s nearly decade running baseball operations in Seattle, he has only given out one multi-year deal to a free agent position player, that being Mitch Garver’s modest two-year, $24MM pact a couple offseasons ago. Clearly, that will need to change in order to retain Naylor.
That said, Dipoto told MLBTR’s Darragh McDonald on our podcast last month that the Mariners have definite interest in keeping Naylor long-term and believe the feeling is mutual. Dipoto noted that Naylor is “as good as anybody that’s played in the last handful of years at hitting [at T-Mobile Park]” — notoriously one of the most pitcher-friendly stadiums in the game. Naylor himself spoke about that to Jude’s colleague Ryan Divish last month, too, stating that as a visitor he “couldn’t wait” to come to T-Mobile Park and emphasizing how much he enjoys the stadium and the atmosphere created by the fan base. He used the word “awesome” multiple times in his more recent chat with Kramer and Jude about his experience in Seattle and the “ride-or-die” mentality of Seattle fans.
Even with mutual interest, the Mariners will have to extend well beyond their prior comfort levels in free agency to keep Naylor. At just 28 years old and coming off four straight seasons of well above-average offense, he should be in position to command a deal of at least four and possibly up to six years in length. In all likelihood, Seattle will need to more than triple and perhaps quadruple its investment to Garver in order to keep Naylor. Currently, the M’s have about $139MM on next year’s books (once Andres Munoz’s option is exercised), per RosterResource, though non-tenders and trades will surely impact that sum. They finished up the current season at about $166MM in payroll.
To be clear, the Mariners have signed players to lucrative long-term deals under Dipoto — just not specifically free agent position players. Left-hander Robbie Ray signed a five-year, $115MM deal in free agency following his Cy Young win back in 2021. The Mariners extended Luis Castillo on a five-year, $108MM deal after acquiring him from the Reds in a deadline swap. And of course, homegrown stars Cal Raleigh (six years, $105MM) and Julio Rodriguez (12 years, $210MM) signed nine-figure extensions to remain in Seattle for the long haul.
That the Mariners will prioritize Naylor over other free agents doesn’t necessarily make it a foregone conclusion that Polanco and Suarez will depart. Both Jude and Kramer suggest that with top prospect Colt Emerson and slick-fielding Ben Williamson in the mix at third base, re-signing Suarez on a weighty multi-year deal that covers his mid-30s is unlikely. However, both also note interest in retaining Polanco, who enjoyed a remarkable rebound campaign after re-signing on the heels of a 2024 season that was ruined by a knee injury.
Polanco underwent surgery last October and roared back into relevance this year with a .265/.326/.495 batting line (132 wRC+) and 26 homers during the regular season. He added three more postseason homers, including a pair of long balls against likely AL Cy Young winner (for the second consecutive season) Tarik Skubal.
The Mariners have a high-upside long-term option at second base in former first-round pick and top prospect Cole Young, but the 22-year-old Young hit just .211/.302/.305 in his first 77 MLB games this year. Even if Young is the long-term answer at second base — and some early struggles in fewer than 300 plate appearances hardly erodes the chances of that happening — Seattle could bring Polanco back as a primary designated hitter and part-time infielder. That’s the role he filled in 2025, tallying 88 games at DH, 38 at second base, five at third base and even one at first base.
As with Naylor, Polanco would require the Mariners to commit a multi-year deal, although not nearly on the same scale. Polanco will turn 33 early next July. A deal for him seems likely to be capped at three years, particularly when considering his recent injury troubles. He’d still require a more sizable commitment than the one made to Garver in free agency two years ago, but not by an especially large margin.
Mariners brass is set to talk with the media at an end-of-season press conference later this morning (1oam PT), and they’ll surely touch on this and a broad range of topics as they look ahead to the offseason, so there could be a fair bit of Mariners news emerging in the very near future.