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’s .294 batting average and 125 wRC+ (100 is league average) bring much-needed consistent production to the middle of the Mariners’ lineup. And it’s not the only thing he will add to the team, according to ESPN MLB insider Jeff Passan.

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.