How to preserve a signature on a Tennis ball?

I got my tennis ball signed by both Federer and Murray last night.
Federer signed with a permanent marker but murray signed with a regular pen.
The tennis ball is the size of a basket ball, so please don’t mention a baseball stand.
Thanx!

How to practice tennis without being on a court?

I want to improve my form for high school tryouts, but I can only find time to go to the courts about 2 times a week. Would just going through the motions without using a tennis ball be beneficial to me? Thanks, I would appreciate any suggestions.

How to calculate where a tennis ball will land?

I throw tennis balls for my sister to hit on the weekdays and have been wondering, how can I tell where the tennis ball will land after she hits them with her racket? What formula and physics are involved?
Or the direction it will go in.

I am a definite tennis player, and its always a pain to pick up the balls after tennis practice. I’ve seen my coach and some other players use their racket and their foot to pop the tennis ball off the ground. Can anyone tell me the basics on how to do this?

Why don’t they just hold it the tennis ball before they play it?

Our company is sponsoring a golf tournament. We are going to be sponsoring some of the holes on the tee boxs handing out prizes. We need a game that we can play for the prizes. We have one game where the players try to hit a tennis ball into a bucket and if they get it in, they get a prize, but we need some more ideas for our other holes. Please Help with some ideas that you guys have done at golf tournaments, or just ones that you have heard of.