she playes 36 times
as many times as u want but atleast three or four times
generally indoor times are slower because indoor tracks are smaller. this means that you must complete more circuits to get the same distance on an indoor track. so, there are more turns to run, which slows people down.
Tennis was started in the Victorian times in England.
It is estimated that outdoor track is faster then indoor, however there is no set equation for this theory.
He is one of the best tennis players of all times.
Pete Sampras won 7 times John McEnroe won 3 times Bill Tilden won 3 times
For a ball Machine, it does not change the kind of ball you would use if you were playing a tennis match. If you are a keen tennis player (plays more than 3/4 times per week) i wouldrecommend to buy Head ATP or any Slazenger but if you are just a typical player any unpressurised ball can be used with success.