The Seattle Mariners are running into a serious problem, and it starts with Luis Castillo. After another rough outing in the Mariners’ series loss to the Chicago White Sox, questions are beginning to grow around Seattle’s veteran starter and whether the former ace can still be trusted at the top of the rotation.

In this episode of Hold My Trident, we break down Luis Castillo’s alarming 2026 numbers, why his struggles are becoming impossible to ignore, and whether the Mariners should seriously consider changing his role moving forward. Is this just a rough stretch, or is Castillo showing signs of long-term decline?

We also discuss:

• Seattle Mariners losing a brutal series to the White Sox
• Castillo’s recent starts and rising ERA concerns
• Why the Mariners’ pitching staff suddenly looks vulnerable
• Bryce Miller’s return and the possible six-man rotation
• Whether moving Castillo to the bullpen could actually help Seattle
• Randy Arozarena frustrations and defensive mistakes
• The AL West standings and why the division is still wide open
• Why the original Luis Castillo trade was still worth it for Seattle

Can the Mariners bounce back against the Houston Astros and save their season momentum before things spiral further? Or is this the beginning of a much bigger issue for Seattle’s playoff hopes?

If you’re a Seattle Mariners fan looking for Mariners news, MLB analysis, Luis Castillo updates, AL West coverage, and daily Seattle baseball discussion, this is the episode for you.

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