Why isn't Don Orsillo announcing Houston Astros-red sox games?

Don Orsillo is not announcing Houston Astros-Boston Red Sox games primarily due to his role with the San Diego Padres as their play-by-play announcer. His commitments to the Padres and broadcasting schedule prevent him from covering other teams' games. Additionally, broadcasting rights and team contracts typically limit announcers to specific teams, making it unlikely for Orsillo to call games outside of his assigned duties.