Find the sport...

-This sport played outside in the summer.
-You can't play this sport in the winter.
-You have to play with different sticks.
-You had 9 or 18 holes.
-You play with a little ball.
-Many person can play this sport are old.
-This sport have international competition on a beautiful field.
-You can play with a smart outfit.

Try to find the sport I have described.