SEATTLE (AP) — When manager Scott Servais was told one of his Seattle Mariners players was going to shave his head to help celebrate one of the most popular promotions in franchise history, he wasn’t shocked to learn it was catcher Cal Raleigh. “Cal is all in. He’s a Mariner through and through, so it didn’t surprise me once I heard his name,” Servais said. “He’s not the first one that jumped out but when I did hear it was him, ‘OK, that makes s…