Baseball America dug deep for their 2026 breakout prospect pick for the Seattle Mariners, and they didn’t land on the usual buzz-name from the organization’s upper tiers. Instead, they pointed to 2025 second-round pick Luke Stevenson.
On draft day, the book on Stevenson was pretty simple: elite defender, bat TBD. Even the most optimistic amateur scouts described the hit tool as “developing,” which is the polite way of saying “we’re crossing our fingers here.” And then Stevenson went out and made everyone look overly cautious. In 22 games with Single-A Modesto, he slashed .