There is not a exact number of balls that are to be used. It can vary from 5 to 15+.
for each match they give the match 500 balls in the huge buckets
Slazenger tennis balls are used at Wimbledon.
4500
3, sometimes 6
Tennis balls were first used in 1902 in Wimbledon
Footballs are used in playing football. Baseballs are used in playing baseball. Soccer balls are used in playing soccor. Tennis balls are used for playing tennis. Golf balls are used in playing golf. Ping pong balls are used to play beer pong. Women often use each kind of ball also.
About 50,000 tennis balls in total. Matches (at least in the ATP) change balls after the 7th game of the match, then every 9 games after that.
Tennis balls are changed during a match because when the can is opened the balls start losing pressure immediatly, reducing the bounce with each shot. This difference is not dramatic as tennis balls can be used over and over but professionals change balls so that they can get the most power and spin from their shots.
52,200 balls were provided by Slazenger; 20,000 of them were used in qualifying.
In much older days they have used white coloured balls but now we use Bright yellow balls.
See the website www.10Stoe.com where tennis balls are used to double the life of your worn tennis or athletic shoes.
Pro-tennis balls are changed after the first seven and nine games.