Mariners Call Up Top Prospect Anderson
Mariners calling up top prospect Kade Anderson to start against Cubs as team struggles

The update
The Seattle Mariners are calling up top pitching prospect Kade Anderson to start Saturday against the Chicago Cubs, according to multiple reports. The 22-year-old left-hander, the No. 3 pick in the 2025 draft, will be the first 2025 draft pick to reach the major leagues. Anderson is replacing right-hander Bryan Woo in the starting rotation.
Why it matters
With a 60-68 record, the Mariners are among baseball’s most disappointing teams this season. The promotion of Anderson, considered the best pitching prospect in baseball, signals a potential shift in strategy as Seattle tries to salvage its postseason hopes. Anderson’s arrival comes with a fastball in the mid-90s and elite off-speed pitches that could immediately upgrade the Mariners’ rotation.
What to watch
Anderson’s adjustment to the major league level after dominating Double-A with a 1.06 ERA, 135 strikeouts, and only 13 walks in 93⅓ innings. The Mariners skipped Anderson over Triple-A, a modern approach for top pitching prospects. His performance against major league hitters and potential impact on Seattle’s playoff chances.
Sources
- cbssports.com — confirming Anderson's call-up and minor league performance
- espn.com — details about Anderson's promotion and Mariners' situation
- USA TODAY Sports — context about Mariners' struggles and Anderson's impact



