What a week it has been for Maria Sharapova who has returned to being the world's No. 1 and completed a career Grand Slam in the span of five days. It's been a long journey back for Sharapova, who won her first Grand Slam at 17 at Wimbledon in 2004.

Sharapova's perseverance in regaining the No. 1 overall ranking embodies the tail of a truly great athlete.

Sharapova now has a new confidence that she can carry through into future majors. She has achieved the impossible such as coming back from major shoulder surgery, including a lengthy rehabilitation phase and dropping in the world rankings. Her rise has been remarkable to say the least and that confidence will carry her a long way in the future.  

At 25 years old, Sharapova is now just in the peak of her career. The next five years of her prime will determine her legacy. Armed with her newfound confidence, her ability to overcome her mental lapses, her top fitness and her ability to overcome the odds, Sharapova will be the favorite in many Grand Slams to come.