When you're going through tough moments, you never know when you're going to have good moments.

A great tennis career is something that a 15-year-old normally doesn't have. I hope my example helps other teens believe they can accomplish things they never thought possible.

My main goal is to stay healthy because when you're injured you realise how lucky you are to have your health.

There's not many firsts in my career, as I have been a part of many tournaments and fortunate enough to win many.

Some of the authorities would like to remove rhythmic gymnastics from the list of Olympic sports and turn it into art. I think this would be wrong, as rhythmic gymnastics is a true sport - we train around six hours per day and sometimes spend entire days in the gym.

It was a great ride, 10-time world tag team champion with my brother and then to work with Sheri Martell back in the days, you know, a dream come true.

On a foggy, steel gray Saturday in September 2002, Bennet Omalu arrived at the Allegheny County coroner's office and got his assignment for the day: Perform an autopsy on the body of Mike Webster, a professional football player.

In life everything is possible. In football everything is possible.