Making a much needed move to upgrade at first base, the Mariners added left-handed slugger Josh Naylor in a pre-deadline deal with the Diamondbacks. What does the sweet swinging vet add to Seattle’s lineup?

In another game to forget for the Mariners, the visiting Brewers took advantage of key defensive miscues and pitches out over the heart of the plate to secure a series win at T-Mobile Park in blowout fashion.

The Mariners had a bad case of the Mondays in their series opener against the Brewers as they failed to scratch across even a single run, all while a rough sixth inning for George Kirby and a shaky debut by Brandyn Garcia resulted in six crossing the plate for the red-hot visitors.

While not all of the Mariners’ highly-ranked prospects have opened the 2025 season with a strong start, several rising talents enjoyed a productive first month down on the farm, with a few potentially making a push to join the big club in the near future.

In what should be a Spring Training of very few roster battles for the Mariners, here are six players Ty Dane Gonzalez is keeping close tabs on.