2021 Seattle Mariners MiLB affiliate preview: Arkansas Travelers (AA) Share this story Arkansas Travelers We continue on with our minor leaugue season preview series, moving into the upper minors after Kate previewed the Low-A Modesto Nuts and John did the same for the starpower-packed Everett AquaSox, now a High-A affiliate. The Mariners’ Double-A affiliate in Arkansas won’t have the same concentration of system talent as their worldbeating 2019 team, but this roster is full of doughty minor-league vets who know how to win, and should enjoy regular infusions of talent as various AquaSox prove they’ve moved from being tadpoles to full-fledged frogs.