[potato]

Since pivot foot is not established until either both feet or the other foot touches the ground (meaning a player who receives the ball with one foot on the floor hasn't establish a pivot until the other foot touches the floor in which the 1st foot on the floor becomes pivot am i right?), how would such scenario be treated?

A1 gets possession of the ball in mid air from a pass, A1 lands on his left foot and hops on the same left foot once and lands on the same left foot (right foot still off the ground all these while). Would this be called a jumping, traveling, or legal? If it's legal what happens when his right foot lands?