Mariners plan Saturday call-up for top pitching prospect, per Passan

The left-hander was the No. 3 pick in the 2025 draft

Wire Report IntelligenceUpdated Aug 201 min read

Breaking: The Seattle Mariners plan to call up left-hander Kade Anderson, the top pitching prospect in baseball, to star Via @espn on X

What happened: The move would mark the prospect's major league debut. He has recorded a 1.06 ERA with 135 strikeouts, 13 walks and 47 hits allowed across 93.1 innings.

Why it matters: The Seattle Mariners would add a high-end young arm during the regular-season stretch run. The planned promotion comes one year after the left-hander was drafted third overall.

By the numbers: His 2026 rates translate to 13.0 strikeouts and 1.3 walks per nine innings, a 10.4-to-1 strikeout-to-walk ratio and a 0.64 WHIP.

What to watch: Watch for Seattle to confirm Saturday's starter and the timing of the corresponding roster move.

Sources

@espn 2026-08-20T22:41:05.044412+00:00

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