But despite Sharapova, the world's highest earning sportswoman, confronting a potentially career-ending ban, industry insiders insist that the sport can ride out the storm.
"The Maria Sharapova doping story, whilst not ideal for the sport, is certainly not damaging enough to really affect tennis in the same way as we saw perhaps with cycling or sprinting," Jon Stainer, managing director of sports sponsorship experts Repucom, told AFP.
"In both those cases, doping was being carried out by a number of athletes for a sustained period."
The five-time major champion earned more than great rival Serena Williams, the undisputed world number one and 21-time Grand Slam title winner, who banked almost USD 25 million.
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As an indication of their significance to the sport, the two women also have huge social media profiles which dwarf their top 10 rivals.
Williams has six million Twitter followers; world number seven Sharapova boasts more than two million.
The ruling WTA would be forgiven for hoping that the charismatic, photogenic but unpredictable talents of Caroline Wozniacki and Eugenie Bouchard can soon make a Grand Slam breakthrough.
Sharapova, for her part, has not ruled out a return although her fate is in the hands of others.
"I am determined to play tennis again and I hope I will have the chance to do so. I wish I didn't have to go through this, but I do -- and I will," she said.
- 'Beauty sells' -
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"Sharapova is the most marketable female athlete in the world, ranking above the likes of Serena Williams and (Alpine skiier) Lindsey Vonn," added Stainer.
"According to our Celebrity DBI Index, of the 76 percent of people that know of her globally, 74 percent say they like her and 75 percent say they find her aspirational.
"Brands are currently waiting to see what further fall-out there might be but are seemingly cautious not to cut ties too quickly as those that do may allow other rivals to easily take their place."
But she's not the only one fighting time.
Roger Federer, the record 17-time Grand Slam champion, will turn 35 in August and has been without a major since Wimbledon in 2012.
The Swiss was tennis's top earner in 2015 -- and fifth on Forbes' all sports list -- with USD 67 million.
Current world number one, Novak Djokovic, six years Federer's junior, raked in USD 48 million.
But Nadal still made USD 32.5 million.
Djokovic and Andy Murray, 28, will of course remain to carry the banner and even if the sport faces a scramble for its next poster boys and girls, experts insist tennis is bigger than individual attraction.
Japan's Kei Nishikori, who is 26, and 25-year-old Canadian Milos Raonic are seen as key to future growth outside of Europe.
Then there are the four Grand Slams which are "incredibly strong brands in their own right", added Stainer.
"Tennis's appeal across a large number of international markets and audiences types means it is protected somewhat from individual and isolated issues such as this (the Sharapova affair).