Answer:
I am round. I have only one line. Circle is not my name indeed. What am I?
I am an object which is used in baseball during the day I can't be seen at all
I am the book one can never finish reading
What has a bottom at the top?
I have a frame but no picture. I have poles but not standing up
I met a man and drew his name. He tipped his hat and played my game. What is his name?