Jerry DiPoto signaled that the Mariners intended to be buyers this summer, with a 1.5-game lead in the race for a Wild Card spot and one of the best and deepest rotations in baseball. The only thing that was missing was a little more offense — particularly at first and third base, where Donovan Solano and Ben Williamson weren't going to be enough.

The Arizona Diamondbacks are trading first baseman Josh Naylor to the Seattle Mariners, according to ESPN's Jeff Passan. Left-hander Brandyn Garcia and right-hander Ashton Izzi will come to Arizona in return. The Diamondbacks land pitching for one of their more valuable trade pieces.

The Mariners traded Izzi to the Diamondbacks on Thursday alongside Brandyn Garcia in exchange for Josh Naylor, Jeff Passan of ESPN.com reports. Izzi has spent all of 2025 with the Mariners' High-A affiliate,

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.