Differential learning, forehand, dito backhand, dito volley.
Player is starting in the hoop. In the setting he hits the ball and goes back to the hoop, following the red mark.

Variation: mark in front, mark in the back, different starting positions in the hoop; ballthrow from different positions; ballfeed with racket from different positions;…

No explicit advice about stroke technique; high intensity; using stage of fatigue; no repetition, setting additional targets: net high/low; targets on the other court-side; …