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.

In a wide-open American League, the Mariners will have as good a chance as anyone to make a deep postseason run, and Naylor could be a big part of that. He’s played in three postseasons and is known for hitting clutch home runs.

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.