PHOENIX -- The Seattle Mariners acquired first baseman Josh Naylor from the Arizona Diamondbacks on Thursday as the franchise tries to beef up its lineup ahead of the July 31 trade deadline.

The Mariners kicked off trade-deadline season with a significant addition, acquiring first baseman Josh Naylor from the Diamondbacks, a source told The Times.

The Seattle Mariners acquired first baseman Josh Naylor from the Arizona Diamondbacks on Thursday as the franchise tries to ...

Along with their 4-2 win Thursday came the reaction to the Mariners making the first bold move this trade deadline by acquiring slugger Josh Naylor.

Naylor hit a winning grand slam against the Mariners in June. “We are thrilled to add Josh as we make a push for the postseason,” Seattle general manager Justin Hollander said in a statement.

The Seattle Mariners are acquiring first baseman Josh Naylor from the Arizona Diamondbacks, ESPN MLB insider Jeff Passan reported Thursday.

The Seattle Mariners have acquired first baseman Josh Naylor from the Arizona Diamondbacks. This move comes as the Mariners aim to strengthen their roster before the July 31 trade deadline. Naylor, ...