Report: Mariners re-signing Naylor on 5-year deal

Josh Naylor is staying in Seattle.

The Mariners are finalizing a five-year contract with the one-time All-Star first baseman, sources told ESPN's Jeff Passan. Financial terms of the agreement are not yet known, and the deal is pending a physical.

Naylor was an immediate fit in Seattle after they acquired him from the Arizona Diamondbacks in a July trade. The 28-year-old posted a .831 OPS with nine homers, 33 RBIs, and stole 19 bases without being caught in 54 games after the trade to help the Mariners win their first division title since 2001.

Overall, he hit .295/.353/.462 with 20 homers, 92 RBIs and a career-best 30 steals across 147 total games in 2025.

Naylor turned into a beast in the playoffs, slashing .340/.392/.574 with three homers and five RBIs during the Mariners' run to the ALCS. The majority of that production came in the championship series versus his hometown Toronto Blue Jays, when Naylor went 10-for-24 in his team's seven-game loss.

Re-signing Naylor shores up what had been a significant hole at first base for the Mariners. He also gives them another power bat behind AL MVP runner-up Cal Raleigh.

The Canadian is a lifetime .269/.329/.447 hitter with 104 homers and 435 RBIs across parts of seven big-league seasons with Seattle, Arizona, Cleveland, and San Diego. Naylor was an All-Star with the Guardians in 2024.

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