Despite already helping the Seattle Mariners out on the big league roster, Keith Law says Cole Young is their most trade-able prospect.

The D-backs traded first baseman Josh Naylor to the Mariners in exchange for left-handed pitcher Brandyn Garcia (Arizona's updated No. 16 prospect per MLB Pipeline) and right-hander Ashton Izzi (No. 11),

For most of the season, the main talking point for top 100 Seattle Mariners prospect Lazaro Montes has been his power. He flashed the glove in a web-gem play for the Double-A Arkansas Travelers.

Mike Salk and MLB Network's Jon Morosi describe the various ways that recently acquired first baseman Josh Naylor can help the Seattle Mariners.

Ryan Sloan, the Mariners’ 19-year-old right-hander in his first season of pro ball, is quickly building a reputation as Seattle’s next great pitching prospect.

The Seattle Mariners could be big-time buyers at the trade deadline, but it might cost them one of their better prospects.

After reinforcing the infield with Ryan McMahon and Amed Rosario, the Yankees are seeking a starting pitcher, according to ESPN. They are not eager to trade top prospects George L

Mariners No. 10 prospect Tai Peete belts his 16th home run of the season, a three-run homer to right, for High-A Everett