Free agent first baseman Josh Naylor has agreed to re-sign with the Seattle Mariners on a five-year contract, multiple media outlets reported on Sunday night.

Financial terms weren't reported, with the deal pending a physical to make it official, per reports.

Seattle had acquired Naylor, 28, from the Arizona Diamondbacks for left-hander Brandyn Garcia and minor league pitcher Ashton Izzi on July 24, ahead of the trade deadline.

Naylor batted .299 with nine home runs, 33 RBIs, a .341 on-base percentage and .490 slugging percentage in 54 regular-season games as the Mariners won the American League West.

He batted .340 with three homers, five RBIs, a .392 on-base percentage and .574 slugging percentage in 12 playoff games as Seattle reached Game 7 of the American League Championship Series before elimination by the Toronto Blue Jays.

Naylor batted .292 with 11 homers and 59 RBIs in 93 games in 2025 for the Diamondbacks. He was 30-for-32 in stolen-base attempts last season, including a perfect 19-for-19 with the Mariners.

Naylor is a .269 career hitter with 104 homers and 435 RBIs in 745 regular-season games for San Diego (2019-20), Cleveland (2020-24), Arizona (2025) and Seattle, earning an American League All-Star selection in 2024 with the Guardians.

He has played the outfield and been a designated hitter in addition to first base.

The Miami Marlins selected Naylor 12th overall in the 2015 MLB Draft and dealt him 13 months later to San Diego. The Padres moved him to Cleveland in August. 2020. The Diamondbacks acquired Naylor in December 2024 from the Guardians for right-hander Slade Cecconi.