a circle in a circle is the pitchers mound
large round pitchers mound
a black and white photo of picture
he is being shown in various poses
the pitcher's mound in a ball park
this picture is showing the pitcher from different positions
the pitcher on the mound has been edited
this sequence shows how the pitcher throws the ball
this scene illustrates how a pitcher should throw a ball
grass on the field 
the pitchers mound
a black - and - white photo depicts a baseball pitcher pitching the ball as another player stands near the pitcher on the mound in a field