How to do an underhand serve<br>Get your feet into position. Stand with your non-dominant foot in front with your toes facing forward. Your dominant foot should be in the back with toes pointed slightly out.
Underhand serves are the best serves.
( z1 serve :mod ( z2 underhand ) :ARG1-of ( z3 have-degree :ARG2 ( z4 good :ARG1 z1 ) :ARG3 ( z5 most ) ) )