Mariners Call Up No. 5 Overall Prospect for MLB Debut
The Seattle Mariners are calling up No. 1 prospect Kade Anderson following an unbelievable season in the minors.
The Seattle Mariners have called up Kade Anderson, their No. 1 prospect, to make his Major League Baseball debut, according to ESPN's Jeff Passan. Anderson, who was the No. 3 overall pick in 2025's MLB Draft, is coming from Double-A Arkansas, where he has been the standout pitcher this season. In 93.1 innings, he has allowed only 11 earned runs while striking out 135 batters.
His 0.64 WHIP is the best among all qualified pitchers across any minor league level. Anderson, who was projected to be the top pick coming out of college, has not allowed a run in his last four appearances, totaling 20.2 innings. As he is not currently on the team's 40-man roster, the Mariners must find space for him, though reliever Matt Brash's injury should make that process relatively simple.
The Mariners' current rotation features Emerson Hancock, Logan Gilbert, Bryce Miller, George Kirby, and Bryan Woo, with Miller having the weakest standing at 8.04 ERA in his last three starts. With an overall rotation ERA of 3.83, which ranks eighth in MLB, the arrival of Anderson should further improve the team's performance. Seattle has already set their starting lineup for their upcoming three-game series against the Milwaukee Brewers, but Anderson will likely make his MLB debut in their subsequent series against the Philadelphia Phillies.
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