The Seattle Mariners are poised for a series of roster adjustments as they gear up for their season opener against the Oakland Athletics. Initially, the primary focus was on filling the second base and designated hitter roles, with Dylan Moore set at second base and a combination of Mitch Garver, Mitch Haniger, and Donovan Solano expected to share DH duties. However, as spring training progresses, the dynamics are shifting. Dylan Moore’s lackluster performance has opened the door for Ryan Bliss, who has shown promise, while Leo Rivas faces uncertainty due to an ankle injury.

Bliss's strong showing suggests he may become the primary second baseman, relegating Moore to a utility position. Meanwhile, Rivas, who made his MLB debut last year, finds himself on the bubble as he makes a short comeback in the lineup starting at shortstop against the Los Angeles Angels. With the season rapidly approaching, Rivas has less than three weeks to secure his spot on the 26-man roster, making each performance critical. The Mariners face the Angels and Arizona Diamondbacks shortly, providing further opportunities for players to establish themselves.