Many of the stadium seats are empty.
a man pitching a baseball
a man wearing his baseball uniform
a man with one leg in the air
a man with a baseball mitt
a man playing in a baseball game
a baseball player in action
a man in a black hat
a man about to throw a baseball
a man with baseball in hand
The baseball fans in the stadium.
Part of the baseball field.
Part of the baseball stadium. 
spectators sitting in bleachers 
bleacher seats are green
baseball diamond in clean and grassy
audience watching baseball
baseball player pitching a ball to pitcher in a baseball game on a field while people watch and a crowd of baseball players are watching the field