he is serving the ball 
he is preparing to serve 
he is a tennis player 
he is playing tennis 
this is a concrete wall 
half of the concrete wall is green 
this half of the wall is painted green 
a green turf around the court 
tall concrete wall painted green and grey
A man preparing to serve
A wall behind the man
Tennis court with green and grown turf.
Tennis court with brick and green wall. 
Man playing tennis on tennis court. 
man holding racket on tennis court hitting tennis ball with racquet to serve ball on court