"We need two players to take us over the top: Babe Ruth and Lou Gehrig."See Baseball Almanac for the full list of Don's "answers."
In the comments for that Carman card profile, Night Owl pointed out that writers have to tell a story, stock phrases or not. If they see Don's list posted on a locker, that's an invitation to talk about different questions the player wants to answer.
The answer is "42"
If you wore the reporter's hat, what question would you ask?