Could the Seattle Mariners land first baseman Josh Naylor as part of a blockbuster deal with the Arizona Diamondbacks at the 2025 MLB trade deadline?

Historically, it's risky to draft right-handed high school pitchers at the very top of the MLB Draft. Also historically, the Seattle Mariners have been incredible at drafting and developing pitchers in their farm system. Almost the entire rotation for the team was drafted by the M's and brought through the franchise's farm system.

The Arizona Diamondbacks and Seattle Mariners could look to come together on a trade that would send slugger Josh Naylor to Seattle.

Two ESPN insiders think the Yankees will have major interest in Eugenio Suárez, who would also be an ideal trade fit for the Seattle Mariners.

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Naylor, by contrast, is in the midst of another strong season. The left-handed slugger is batting .296/.367/.465 with a 127 OPS+, 11 home runs, 58 RBIs and an impressively balanced 44:40 K:BB ratio across 314 at-bats.

Josh Naylor and Eugenio Suarez could both be available before the MLB trade deadline. The first-baseman Naylor and third-baseman Suarez would both be massive upgrades for the Mariners. In new analysis by ESPN's MLB insider Jeff Passan out Thursday morning, he suggests Seattle might just go get both guys.

Expert recap and game analysis of the Seattle Mariners vs. Detroit Tigers MLB game from 12 July 2025 on ESPN (UK).