The Mariners are once again looking to upgrade their offense this winter after 2024’s underwhelming results at the plate squandered a terrific season from their pitching staff. Unsurprisingly, general manager Justin Hollander tells Jon Morosi of MLB.com that the M’s view second base as a priority this offseason. Ken Rosenthal of The Athletic adds that the M’s would also like to add at first base. Ideally, Seattle would add one bat to help out at second or third base — with Josh Rojas and Dylan Moore a potential platoon at the other spot — and another at first base. Hollander downplayed the idea of adding to the outfield, telling FanSided’s Robert Murray that between Randy Arozarena in left, Julio Rodriguez in center, Victor Robles in right and Luke Raley as a corner outfield/first base/DH option, the Mariners feel they have potential for a “pretty high-end outfield.”
With the offseason just days old, there are of course virtually limitless options to explore via free agency and trade. Morosi reports that Seattle is among the teams to have evaluated Hyeseong Kim, the star second baseman of the Korea Baseball Organization’s Kiwoom Heroes. Kim, 25, is scheduled to be posted for MLB clubs to bid on this winter. Rosenthal lists a reunion with Justin Turner as something Seattle could pursue. He cautions against the likelihood of the Mariners spending to the levels necessary to add longtime division rival Alex Bregman or (to a lesser extent) first baseman Christian Walker.
Kim, 26 in January, hit .326/.383/.458 with 11 home runs, 30 steals, an 8.3% walk rate and just a 10.9% strikeout rate for the Heroes this past season. He’s been a plus hitter three straight seasons in the KBO but is more of a contact-, speed- and defense-oriented player, as he’s not considered to have much home run pop. This past season’s 11 round-trippers were a career-high. Turner, of course, finished out the 2024 season in Seattle after coming over from the Blue Jays in a trade. He batted .264/.363/.403 in 190 plate appearances as a Mariner. His overall .259/.354/.383 slash is a ways from peak levels, and Turner will turn 40 later this month. That said, he was still a productive big league hitter this past season.
The Mariners’ expected focus on infield bats — and their flexibility to look at multiple positions — was laid out in our Mariners Offseason Outlook. As noted in that piece a few weeks back, Kim and Gleyber Torres are two particularly interesting options at second base, and both are likely to be relatively affordable. Former Padres shortstop Ha-Seong Kim could technically be a fit at second or third base, but he’s likely to miss the beginning of the season following his recent shoulder surgery and derives a good bit of his value from his plus glovework. He’d be a less-than-ideal fit if the goal is to bolster the offense from day one.
Meanwhile, signing Bregman or Willy Adames (perhaps with eye toward moving him to third base) would represent a major philosophical departure from the Mariners’ past mode of operation. The M’s have only given out one multi-year deal to a free agent position player under president of baseball operations Jerry Dipoto — that being last winter’s two-year, $24MM pact to Mitch Garver. Rosenthal suggests that signing a $100MM+ deal could be outside the team’s budget, but even beyond that, it’s simply not how Dipoto has historically operated.
The trade market could present various alternatives. The Rays will likely listen to offers on Yandy Diaz, making him one speculative fit at first base. He’d align well with Seattle’s desire to reduce their MLB-worst strikeout rate and is slated to earn $10MM next year with a $12MM club option for 2026. Rays second baseman Brandon Lowe, owed $10.5MM with an $11.5MM club option for 2026, is another on-paper fit. He wouldn’t reduce the team’s strikeout rate, but he’s a potential impact bat with multiple years of club control. Cleveland could listen to offers on slugging first baseman Josh Naylor.
However things play out, the M’s will be looking to once again redraw an offense that has struggled to make contact at one of the most glaring rates in the league. In addition to tying the Rockies with an MLB-high 26.8% strikeout rate, Mariners hitters had the league’s third-lowest overall contact rate (74%) and were tied for MLB’s second-worst contact rate on swings at pitches within the strike zone (82.9%). The Seattle lineup actually chased pitches off the plate at the fourth-lowest rate in MLB … but their contact rate on those swings was still the third-worst.
