Story highlights
- Sharapova can return to action on April 26
- Russian banned for 15 months for doping
- She says she has her "day job back"
(CNN)It is a sporting return which has generated mixed reactions, but as Maria Sharapova prepares for her first competitive match following a doping ban the five-time grand slam champion says she feels vindicated and empowered.
The 29-year-old Russian was suspended last June after testing positive for meldonium, an over-the-counter heart medication commonly used in countries formerly comprising the Soviet Union.
Initially barred for two years, her ban was cut to 15 months by the Court of Arbitration for Sport who said in its ruling it did not believe the player was an "intentional doper."
Sharapova, who is scheduled to play in April's Porsche Grand Prix in Stuttgart, said she had "fought hard for the truth."
"Although I'm at a stage or age in my career where you're closer to the end than your beginning, you always want to end a chapter in your life on your own terms, in your own voice," she told the ANA Inspiring Women in Sports conference.
Sharapova argued she hadn't realized the drug -- which she had taken for more than a decade for various health issues -- had been put on the 2016 prohibited list.
Photos: Maria Sharapova: Richest female athlete of past decade
Sharapova, age 14, plays her first professional tournament in March 2002. She defeated Brie Rippner at the Pacific Life Open in Indian Wells, California.
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Photos: Maria Sharapova: Richest female athlete of past decade
Sharapova holds up her trophy after she won Wimbledon in July 2004. The 17-year-old defeated Serena Williams in the final for her first Grand Slam title.
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Photos: Maria Sharapova: Richest female athlete of past decade
Sharapova serves during the 2006 U.S. Open semifinals. She advanced to beat Justine Henin in the final. It was her second Grand Slam title.
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Photos: Maria Sharapova: Richest female athlete of past decade
Sharapova is given a painting from the Children of Chernobyl Foundation in July 2007. That year, she became a U.N. global ambassador focused on the Chernobyl Recovery and Development Program.
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Photos: Maria Sharapova: Richest female athlete of past decade
Sharapova won her third major title at the 2008 Australian Open.
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Photos: Maria Sharapova: Richest female athlete of past decade
Off the court, Sharapova has become a fashion icon and a popular spokeswoman for many major companies. Her endorsements have included Nike, Gatorade, Canon and Cole Haan.
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Photos: Maria Sharapova: Richest female athlete of past decade
Sharapova falls to her knees after winning the 2012 French Open to complete the career Grand Slam. She also won the French Open in 2014.
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Photos: Maria Sharapova: Richest female athlete of past decade
Sharapova, left, at the London 2012 Olympic medal ceremony at Wimbledon with Serena Williams, center, and Victoria Azarenka. Sharapova finished with the silver after losing to Williams in the final.
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Photos: Maria Sharapova: Richest female athlete of past decade
Sharapova carries the Olympic torch in Sochi, Russia, during the opening ceremony for the 2014 Winter Olympics.
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Photos: Maria Sharapova: Richest female athlete of past decade
A shopper in Shanghai, China, walks past a Nike advertisement featuring Sharapova.
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Photos: Maria Sharapova: Richest female athlete of past decade
Sharapova signs autographs after winning a match at last year's Australian Open. She later announced she had tested positive for banned drug meldonium and was banned for two years, later reduced to 15 months.
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'I've been training hard'
Her ban ends two days after the Stuttgart tournament starts on April 24.
The decision to schedule the former world No.1's first match for April 26 to allow her to compete has generated mixed reaction among players.
A look back at Maria Sharapova's career 00:55
Angelique Kerber and Caroline Wozniacki questioned whether Sharapova should be allowed to make her comeback in Stuttgart.
But Sharapova, a wildcard entry in Germany, says she is not worried about the reception she will receive and says it feels great to have her "day job back."
"When you love what you do, and you do it with passion and integrity and you work hard and have a team around you, and you're the driving force, you know what you stand for and who you are," she said.
"I've got my day job back. It's great. I've been training quite hard for the past four months."
Sharapova last played a professional tournament at the 2016 Australian Open, where she failed her drugs test.
She has also received wildcards for tournaments in Madrid and Rome in May.
