This alternating down the line progression should not be done till one has successfully mastered and achieved progressions 1 & 2. This drill alternates one forehand, one backhand hitting down the line. One must maintain perfect technique while achieving the set goals as demonstrated in the tennis video. We have found mastering the down the line stroke before the crosscourt shot is always more productive and promotes more sound technique and better habits than mastering the crosscourt techniques first.