Mariners Piggyback Pitching Experiment

The Mariners are testing a risky piggyback pitching experiment with Luis Castillo and Bryce Miller, hoping to ease bullpen strain while managing a crowded rotation — but messy execution and player frustration have exposed flaws in the plan. After a behind-the-scenes meeting with GMs, the team is tweaking the setup: Miller starts May 31, Castillo comes in relief — hoping clarity and chemistry can fix what should’ve been sorted before launch. Support the show:Get a discount at https://solipillow.com/discount/dnn. Advertise on DNN:[email protected] This is an automated, high-level news summary based on public reporting.Report issues to [email protected]. View sources & latest updates:https://sources.thednn.ai/7b0c4b3bb45e0b2b