Serena Williams' husband Alexis Ohanian trolls Maria Sharapova over drug ban with 'DARE' t-shirt

Then 29, the Russian athlete had her two-year ban reduced to 15 months after she claimed the drug was for medical purposes and that she didn't know it had been added to the restricted list.

But she tested positive against Williams after yet another defeat at the quarter-final stage of the Australian Open.  

“I did not feel it was a huge responsibility of mine to write all those medications down," Sharapova said at the time. "As I said before, in hindsight, this is a mistake of mine... I did not feel it was a responsibility to have to write down every single match drink I was taking, gel, vitamin that I was taking, even if I took it once during the last seven days. I did not think it was of high importance.”

That said, reactions on Twitter appeared to be split on whether Ohanian's stunt was funny, petty, or just unnecessary.

"Serena's husband is so petty for this shirt!" one user commented.

"Serena's husband is truly appalling. Can't stand that guy. A disrespectful t***. People like him are what make these losses painful," another wrote.  

However, one user thought Ohanian was only cheerleading for his wife.

"LOL now that is a supportive husband," they wrote.

What's more? Ohanian himself appeared to confirm speculations after liking a series of tweets praising him for the act. "The second drag of the Serena-Sharapova match happened off the court, with @alexisohanian in a d.a.r.e shirt. If you know, you know," read one viral tweet liked by Ohanian.