In many ways, Madison Keys, 17, acts like a normal teen in high school. But instead of hanging with her buddies, Keys is getting another form of education -- in the pro tennis world.
Gone are the days when Grand Slam finals regularly featured teenagers. These days, the average champ is strong, experienced ... and in her mid-20s.
There are no style points in tennis. But the sport's individual, theatrical nature encourages players to express themselves on court through fashion.