Overview
- Kade Anderson, who the Mariners promoted Saturday, August 22, will make his major-league debut against the Chicago Cubs after right-hander Bryan Woo was scratched with right-shoulder discomfort.
- Seattle selected Anderson’s contract from Double-A Arkansas and designated left-hander Jhonathan Diaz for assignment to open a spot on both the 26-man and 40-man rosters.
- Anderson was the No. 3 overall pick in the 2025 draft and dominated Double-A with a roughly 10-1 record, a 1.06 ERA, 135 strikeouts and 13 walks in about 93 innings.
- The club is considering a six-man rotation to integrate Anderson and protect other starters as Bryce Miller and Bryan Woo manage arm issues that have clouded their availability.
- The call-up comes while Seattle fights to reach the postseason, and Anderson’s early performance could affect short-term rotation plans, roster moves and the team's trade or free-agent approach this offseason.