Martina Hingis advanced to the second round of the Australian Open in 1995 at the age of 14 years and 2 weeks.
16 years old
Not in a match match but I guess just for a fun game.
A player can use only 1 racquet while playing tennis!!!
The French Open.
3 for womans and 5 for men in a grand slam tournament
A Grand Slam is a tournament of the ranked players and it spans across different continents. There are 4 Grand Slams in a year. The ATP is the Association of Tennis Professionals.