Blocking, secondary defender moves into path of airborne shooter after upward motion starts

“This is an example of a defensive foul for blocking with the offensive player in the act of shooting. The defender, Thaddeus Young, does not establish legal guarding position in the path of the offensive player, Taurean Prince, prior to the offensive player starting his upward shooting motion. The defender here needed to establish himself in the path of the offensive player before the contact was made, and also before the offensive player started his upward motion.”