Understanding Tennis

on the volley keep the racquet head  and hand up through the hit 

when the lob is over your head chase it down

if possible cover your own side 

 gather  by Placing  the ball under the racquet

on the loopy shot it is still a volley

when the tossing arm comes down bring it into your body– prevents opening the shoulders up to soon 

at the net hog the middle ball

on the backhand  volley– breakout in front keep the racquet head above the wrist

Medvedev has one of the biggest wrap arounds on the finish

even on the higher ball get under and hit up