Luis Castillo did what he needed to do. He earned his first win of the 2026 season in Seattle’s 8-3 victory over the Astros in Houston, and the Mariners absolutely needed that version of him to show up. The timing was even more useful, with Bryce Miller back in the rotation picture and Seattle still trying to figure out whether a six-man setup, a piggyback plan, or something in between is the cleanest way through. Castillo went 5 2/3 innings, allowed three runs on four hits, walked four, struck out six, and pushed his pitch count to a season-high 108. He also had early breathing room thanks to Luke Raley’s three-run homer in the first inning, which matters because Castillo still had to fight his command before he truly settled in. Nuke Raley reporting for duty (for the 10th time)🫡 pic.twitter.com/JAIQrVACUu — Seattle Mariners (@Mariners) May 14, 2026 That doesn’t mean Castillo is out of the woods . It just gives Castillo another start to prove this was a turn and not a pause.…