2026-06-20

The Seattle Mariners, approaching the MLB trade deadline, are weighing their options to strengthen their roster. Seattle can buy this season, especially with a right-handed hitter and more bullpen help on their wish-list. Jim Bowden of The Athletic suggests the Mariners' most impactful addition this summer might not be a trade, but rather the promotion of pitching prospects Ryan Sloan and Kade Anderson. Sloan, 20 years old, has a 4.44 ERA in 46.2 innings at Double-A, while Anderson, 21, boasts a 1.13 ERA in 55.2 innings. The Mariners have a stacked rotation with Logan Gilbert, George Kirby, Bryan Woo, Bryce Miller, Emerson Hancock, and Luis Castillo, but could use more bullpen help. And adding Anderson and/or Sloan could be a more impactful addition than a veteran reliever in the trade market. But the decision to promote these prospects will depend on their performance and the team's needs. So, the Mariners will closely monitor their progress. The team has the resources to make a trade by the August 3 trade deadline to improve the pitching staff and/or the lineup. They have needs in the bullpen and the outfield, making a trade a possibility. Colt Emerson is already up in the Majors, and the Mariners might consider adding the other two top prospects to have as good a pitching staff as possible. This season, the Mariners have been dominant, and the addition of Anderson or Sloan could make their pitching staff even stronger. The Mariners' situation is unique, as they could realistically have eight good starting pitchers, making this a ridiculously deep pitching staff come October. The promotion of these prospects would be an easier upgrade than a trade for the Mariners, and it could be the key to their success in the postseason.