Sharapova was banned from competitions for two years as of January 26, 2016, after she had admitted taking banned drug Meldonium since 2006 because of various health problems, reports Tass.
Meldonium became a banned substance on January 1, 2016.
Sharapova was banned by the International Tennis Federation after she tested positive for Meldonium at the 2016 Australian Open.
She could not take part in the Summer Olympic Games in Rio de Janeiro.
Sharapova filed an appeal against the decision on her suspension at CAS on June 9 and maintains she had "not tried to use a performance-enhancing substance".
Sharapova is a five-time winner of Grand Slam tournaments. She has also won the Federation Cup and a silver medal at the 2012 London Olympics.
She has won 38 tournaments in the Women's Tennis Association (WTA) tour, including 35 in women's singles.