In a move that highlights their aggressive strategy before the MLB Trade Deadline, the Seattle Mariners made headlines by acquiring first baseman Josh Naylor from the Arizona Diamondbacks on Thursday.

Josh Naylor smashed his first home run since joining the Seattle Mariners, giving Seattle a crucial lift in their AL West playoff chase.

The Mariners acquired first baseman Josh Naylor from the Diamondbacks on Thursday, one week before the MLB trade deadline.

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.

The Diamondbacks acquired lefthander Brandyn Garcia, who has two appearances for the Mariners this season, and minor-league lefty Ashton Izzi.

Major League Baseball's trade deadline is scheduled for next Thursday, which means teams have less than a week to get their midsummer shopping done. The moves have already started, as the Mariners recently acquired Josh Naylor from the Diamondbacks while the Yankees acquired Ryan McMahon in a trade with the Rockies.

Even after trading for 1B Josh Naylor last week, the Mariners plan to aggressively pursue more roster upgrades ahead of Thursday's trade deadline. Here's the latest buzz.