If the ball gets embedded in the outfield wall, what is the ruling?
High school baseball considers this a "lodged ball" and is considered a dead ball.
A baseball that remains on the playing field but has become wedged, stuck, lost, or unreachable, is defined to be a lodged ball. If the ball impacts any object in the course of play, stops abruptly, and does not fall or roll immediately, it is considered lodged. It is a dead ball (5-1-1f-3,4; 5-1-1g-4)."