The Arizona Diamondbacks traded first baseman Josh Naylor to the Seattle Mariners on Thursday, as first reported by ESPN’s Jeff Passan. It is one of the first major deals of the 2025 MLB trade deadline.

The first Diamondbacks trade domino has fallen, as first baseman Josh Naylor is heading to the Seattle Mariners.

The Seattle Mariners have kicked off MLB Trade Deadline fireworks by swinging a deal for Arizona Diamondbacks star Josh Naylor.

The Arizona Diamondbacks have traded 1B/OF Josh Naylor to the Seattle Mariners in exchange for Pitchers Brandyn Garcia and Ashton Izzi, according to Jeff Passan of ESPN.

The first major move of the 2025 MLB trade deadline arrived Thursday with a deal that sent Arizona Diamondbacks first baseman Josh Naylor to the Seattle Mariners, according to ESPN's Jeff Passan.

The Seattle Mariners kicked off their trade deadline activity Thursday by acquiring a former All-Star from the Arizona Diamondbacks.

While Naylor may not be the impact bat that the Mariners had been shopping for, he does have plenty of power. He hit 31 homers as part of an All-Star season for Cleveland in 2024 and should provide more power for a Marines lineup that could use a boost.

The Arizona Diamondbacks are reportedly expected to be sellers leading up to the MLB trade deadline on July 31, although it remains to be seen how many pieces they are willing to part with.

If the Chicago Cubs had their way, a third baseman, starting pitcher, and reliever would come their way at the trade deadline. While the perfect storm is unlikely, the Cubs should take as aggressive an approach as possible.