When an infield fly is called, but no infielder catches it, what determination is made about runners?

When an infield fly is called, the primary purpose is to protect the base runners from being put at a disadvantage due to the nature of a pop-up that is easily catchable by an infielder. If the infield fly is not caught, the play continues, allowing runners the option to advance at their own risk. The rule essentially means that the runners are not automatically forced out, and they can choose to move to the next base if they believe it’s safe to do so. This is crucial in maintaining fairness in the game, as it prevents the defense from taking advantage of a weak attempt at a catch to double up runners. Thus, runners are allowed to advance after the infield fly call is made, regardless of whether the ball is caught or not.