Talk about your emergency episodes. After Maria Sharapova dropped the bombshell that she had tested positive for a (recently) banned substance at the Australian Open, Ben discusses the facts of the case with doping expert Richard Ings. Who is to blame here? What is the likely punishment? Was it fair to expect Sharapova to realize that something she had taken without incident for a decade was suddenly verboten? What can be done to prevent this happening again?

We'll have much more on this story as it unfolds in coming days, so stay tuned to NCR. 

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