The Mariners keep pointing to Cole Young as the future. Michael Arroyo is making that future look a lot less predictable.
The Seattle Mariners keep trying to sell fans on a future where everything lines up cleanly: the next wave arrives on schedule, payroll stays tidy, and the infield sorts itself out like it’s following a blueprint.
And then Michael Arroyo shows up and completely shreds the blueprint.
MLB Pipeline just dropped its top-10 second base prospects for 2026, and Arroyo is sitting No.