Seattle Mariners Promote Blas Castano, Designate Jesse Hahn for Assignment

The Seattle Mariners have made several roster moves to bolster their pitching staff amid ongoing challenges. Veteran right-hander Jesse Hahn was promoted to the active roster to strengthen the bullpen, replacing Casey Lawrence, who was designated for assignment. However, following a rough outing by Hahn, the Mariners have called up minor league pitcher Blas Castano, who will make his major league debut, to add fresh depth to the bullpen during their series against the Houston Astros. Meanwhile, the Mariners received a significant boost with the return of ace George Kirby from injury, who is expected to make his season debut after recovering from shoulder inflammation. Kirby's return is critical as the Mariners' rotation is still without Opening Day starter Logan Gilbert, who is also recovering from injury. These moves reflect Seattle's efforts to maintain competitiveness as they continue their 2024 campaign.