Maria Sharapova has described having her two-year doping ban reduced to 15 months by the Court of Arbitration for Sport (CAS) as one of the ‘happiest’ days of her career.

The tribunal cut the ban because of her lack of warning from the World Anti-Doping Agency (WADA) as well as the prescription from a Russian doctor based on medical reasons, rather than performance-enhancing, and the fact that she had used the drug for the past 10 years without any anti-doping violations.

Despite not agreeing with a number of the International Tennis Federation’s (ITF) conclusions, they did however insist Sharapova retains most of the responsibility for the failed test.

Sharapova said: “I’ve gone from one of the toughest days of my career last March when I learned about my suspension to now, one of my happiest days, as I found out I can return to tennis in April.

“In so many ways, I feel like something I love was taken away from me and it will feel really good to have it back. Tennis is my passion and I have missed it. I am counting the days until I can return to the court.

“I have learned from this, and I hope the ITF has as well.”

Sharapova tested positive for meldonium in January of this year and subsequently handed a two-year ban from tennis, causing her to miss the Olympics, after an ITF tribunal ruled “she is the sole author of her own misfortune”.

Sharapova posted a statement to her Facebook page (Facebook)

In a statement, the ITF said: “Taking all of these circumstances into account, the CAS panel determined that, although Ms. Sharapova was at fault, her plea of No Significant Fault or Negligence should be upheld, triggering a discretion to reduce the otherwise applicable two year sanction by up to 50 per cent.

“Based on its analysis of Ms. Sharapova's degree of fault, the CAS panel decided that the sanction should be reduced in this case to 15 months.”

Sharapova announced on March 7 that she had tested positive for taking the drug (Getty Images)

The appeal over her suspension was on the basis of the debate around the drug, which is a popular medication in Russia. There are arguments over how long it takes to leave the athlete’s system and whether athletes received ample warning time ahead of it being added to WADA’s banned list in January.

The five-time Grand Slam winner’s lawyer John Haggerty suggested at the time of the ban that Sharapova had received an “unfairly harsh suspension because she is such a famous athlete and they wanted to make an example out of her”.