Mariners Eye Munetaka Murakami to Boost Postseason Push

The Seattle Mariners captured the AL West for the first time in 24 years in 2025, only to see their season end in a heartbreaking Game 7 loss to the Toronto Blue Jays in the ALCS. The team now faces a pivotal offseason as it seeks to strengthen its roster and contend for a first-ever World Series title.

Seattle has already made a major move, signing Josh Naylor to a five-year, $92.5 million contract. The acquisition demonstrates the franchise’s willingness to invest in talent capable of immediately impacting the lineup.

MLB insiders suggest the Mariners’ next target could be Japanese free agent Munetaka Murakami. The 25-year-old infielder’s power bat could fill the void left by Eugenio Suarez at third base, while also injecting additional offensive firepower into Seattle’s lineup.

Murakami, one of the most highly anticipated free agents this offseason, offers prodigious power potential but comes with questions about strikeouts and defensive positioning. The Mariners are weighing how he could best fit alongside Naylor in their evolving roster.

1. Mariners’ 2025 Season and Offseason Moves

Seattle’s 2025 campaign marked a milestone, as the team won the AL West for the first time in over two decades. Despite this success, the Mariners fell just short in the ALCS, losing a tightly contested Game 7 to the Blue Jays. The disappointment underscored the team’s need for additional firepower and roster depth, particularly in the middle of the lineup. Bolstering the offense is a priority if Seattle hopes to translate divisional success into postseason glory. Signing Josh Naylor to a five-year, $92.5 million deal signaled the franchise’s commitment to immediate improvement. Naylor provides a versatile bat capable of contributing both at first base and designated hitter, enhancing lineup flexibility. The Mariners now face decisions on how to complement Naylor while addressing remaining gaps, including the replacement of Eugenio Suarez at third base and further strengthening the team’s offensive and defensive balance.

2. Murakami’s Profile and Appeal

Munetaka Murakami is one of the most sought-after free agents in international baseball this offseason. The Japanese third baseman recently entered the 45-day negotiating window, attracting attention from teams worldwide. Murakami’s 2022 season was historic; he hit 56 home runs and captured the NPB Triple Crown, showcasing his elite power and ability to drive in runs. His offensive potential makes him an attractive option for teams seeking middle-of-the-order impact. Concerns do exist, including Murakami’s strikeout rate and questions about his defensive readiness at third base in MLB. While some project him as a future first baseman, his bat alone makes him a compelling target for a lineup in need of power. Mark Feinsand of MLB Tonight noted that Murakami could be deployed at third base or as a designated hitter, depending on the team’s alignment. His flexibility increases the appeal for a Mariners roster looking to integrate multiple high-profile signings.

3. Fit with the Mariners

Seattle’s interest in Murakami reflects both historical ties to Japanese talent and current roster needs. The franchise has long been associated with international players following the Ichiro Suzuki era, though it has been less active in the Japanese market over the past decade. Replacing Eugenio Suarez with Murakami could provide a significant boost to the Mariners’ lineup. His power complements Josh Naylor’s versatility, creating a potent offensive combination capable of producing in critical situations. Positioning remains a key consideration. With Naylor signed for five years, the team must decide whether to play Murakami at third base, first base, or in a designated hitter role. This decision will influence both defensive alignment and lineup construction for the coming season. If integrated effectively, Murakami could accelerate Seattle’s postseason aspirations. The Mariners’ front office appears willing to explore the investment, balancing potential risks with the opportunity to add a rare, game-changing bat.