In Stuttgart Open Tennis this evening, the 30-year-old Maria Sharapova will return from a 15-month doping suspension to open the next chapter.She will face Roberta Vinci. Women's tour has been left flagging by the absence of Serena Williams, probably Sharapova's only serious rival.An initial two-year suspension was cut to 15 months and the Sharapova is now without a world ranking, requiring wildcards from tournaments.Stuttgart is the first event to hand her a wildcard. Forthcoming tournaments in Madrid and Rome have followed suit.Sharapova shot to international fame as a 17- year-old Wimbledon winner in 2004 — the third youngest player to conquer the All England Club's famous grass courts. She went on to win the Australian and US Opens while claiming two titles at the French Open.