Mariners acquire 1B Josh Naylor from the Diamondbacks for two pitchers

Mark J. Rebilas-Imagn Images

LHP Brandyn Garcia and RHP Ashton Izzi are headed back to Arizona in the deal

Today the Mariners kicked off the 2025 trade deadline by acquiring 1B Josh Naylor from the Arizona Diamondbacks in exchange for LHP Brandyn Garcia, who recently made his big-league debut, and minor-league RHP Ashton Izzi.

While the Mariners traditionally like to act quickly on the market whether at the deadline or in the off-season, this trade deadline has been slow-developing.