You don't NEED two balls to play tennis, it's just helpful to have another in your pocket to not spend an extra 30 minutes chasing tennis balls.
To play tennis, basically all you need is a racket your size, tennis balls, tennis court shoes and tennis balls. Very Simple.
The basic equipment you need to play tennis is a tennis court with net, a tennis racket. and some tennis balls. You also need shoes that are comfortable when running, or tennis shoes.
Well... Tennis Racket Couple balls Sneakers opponent
To play tennis.
Well when you play tenis you obvisuoly need a tennis racket, preferbly 2 balls, and a tennis court,
one
New tennis balls are considered fresh and not "flat". Old tennis balls exposed to play and air become flat and do not perform normally in a match.
Tennis racket, court, balls, appropriate clothes, and a partner to play with.
NO whenever the next time you are going to play tennis is when you can use one
There are so many Chinese that play ping pong that I think there may be more table tennis balls.
A local tennis court, comfortaly fitting clothes, a tennis racquet, tennis shoes (running shoes can scuff up the court and are not aloud at most clubs), tennis balls, and some one to play with/ball machine.
You'll need to bring a pair of tennis shoes (sneakers, as long as they're appropriate to run in, work fine) as well as tennis balls and tennis rackets. Bring water, too, as you'll need it after a few sets.