What happened: Pat Murphy retrieved the message he sent Freddy Peralta on Jan. 22 after the move to the New York Mets. The note thanked Peralta, said Murphy was honored to see every big-league pitch of his career to that point, and expressed how much he cares about him.

Why it matters: Peralta lines up to face his former club in the World Series after the January move. He earned ALCS MVP honors to punch the return trip, adding history to the reunion.

What to watch: The World Series start will show how familiarity cuts both ways for pitcher and hitters.