Answer:
A sport with love and service played by singles and pairs.
A thousand wheels, but move I do not. Call me what I am, call me a lot. What am I?
He has married many women, but has never been married. Who is he?
What can be as big as an elephant but weighs nothing?
I rise and fall no matter what, only at finals rest do I not budge. What am I?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.