It was phrased as a conditional, If she gets the home run then the team wins so if the team didn't win then logically she didn't get the home run. That makes the same sense as the question of the chick that didn't go to the movie unless she could drive. The two answers that were logically correct were that a)if she went to the movies she drove, and b) if she didn't drive she didn't go to the movies. That has the same if not-B, then not-A as the baseball question.
If not-B, then not-A.,
that still sounds to me to be correct.
It was phrased as a conditional, If she gets the home run then the team wins so if the team didn't win then logically she didn't get the home run. That makes the same sense as the question of the chick that didn't go to the movie unless she could drive. The two answers that were logically correct were that a)if she went to the movies she drove, and b) if she didn't drive she didn't go to the movies. That has the same if not-B, then not-A as the baseball question.