I was on Murder She Wrote with Angela Lansbury. She was fantastic... she was lovely to everyone, she was always on time, prepared.
Baseball is a team game but, at the same time, it's a very lonely game: unlike in soccer or basketball, where players roam around, in baseball everyone has their little plot of the field to tend. When the action comes to you, the spotlight is on you but no one can help you.
In discussing the process with the actors, I made it clear to them that they could improvise but that the sum total of their improvisation needed to impart certain plot points, and schematic material.