Jerry Dipoto has a longstanding reputation for jump-starting the Trade Deadline market, and the Mariners’ president of baseball operations indeed sparked this year’s traction, with the first major domino falling to Seattle on Thursday night.

Naylor is slashing .292/.360/.447 this season, with 11 home runs, 59 RBIs and 11 stolen bases. The Diamondbacks had acquired Naylor in an offseason trade with the Guardians, with the slugger coming off a 31-homer, 108-RBI campaign in Cleveland. Naylor, 28, is a free agent at the end of the season, making him a rental for Seattle.

Josh Naylor's cousin is Athletics center fielder Denzel Clarke, and his younger brother plays for their Single-A affiliate south of Sacramento.

MLB trade deadline action officially kicked off when the Seattle Mariners acquired first baseman Josh Naylor from the Arizona Diamondbacks on Thursday.

The Boston Red Sox will be targeting a first baseman at the 2025 MLB trade deadline, this prediction lands a former All-Star to fill the void.

Former Arizona Diamondbacks first baseman Josh Naylor shared his thoughts on the whirlwind of his trade to the Seattle Mariners.

Pressure is a privilege in the eyes of new Seattle Mariners slugger Josh Naylor. The 28-year-old first baseman is looking forward to the opportunity to bat cleanup in his first game with Seattle against the Los Angeles Angels on Friday night.

Though the move is a position upgrade for Seattle, it isn’t ideal for Naylor’s fantasy value — he was hitting .324 with five homers, 36 RBIs and a .855 OPS at Chase Field. Since 2021, Naylor hit a homer roughly once every 24 at-bats — including a career-high 31 last year with Cleveland when he hit one every 18 at-bats.

Who won the Josh Naylor trade between the Arizona Diamondbacks and Seattle Mariners? Check out early grades to Josh Naylor trade on July 24, 2025.