Sharapova competed for the first time in more than a year last month having served a suspension for failing a drugs test in 2016.
The lack of competitive action has seen her drop out of the top 200 players in the world and she is relying on wildcard invitations to the biggest tournaments.
But the two-time French Open champion was not given an entry to the Roland Garros competition this week, a decision Johan Eliasch, chief executive of tennis racket firm Head, has surprisingly got behind.
“I fully support the Grand Slam tournament’s decision,” Eliasch told The Times.
“I don’t think there should be wildcards for doping offenders.
“What also disappoints me is the fact that World Anti-Doping Agency (WADA) has not conducted their Business properly.
“What I think is still very wrong is the fact that WADA has been allowed to enforce the rule without any form of evidence or clinical testing.
“If WADA is to have any credibility, they have to stick to their own rules.”
Sharapova was initially handed a two-year ban after testing positive for banned substance meldonium during the 2016 Australian Open.
However, the Russian appealed the sentence to the Court of Arbitration for Sport (CAS) and they reduced the ban to 15 months, labelling Sharapova ‘not a drugs cheat’ in the process.
Instead, the report claimed she had accidentally broken the rules since meldonium had only just been added to the banned list.
But that has not stopped her drawing widespread criticism now that she is back in action.
Wimbledon finalist Eugenie Bouchard called Sharapova a cheat before knocking her out of the Madrid Open last week in a frosty encounter.
And the former world No1 pulled out of her most recent match at the Italian Open against Mirjana Lucic-Baroni with an injury to her left thigh.
But assuming she recovers in time, Sharapova could play in 2017’s next major championship at Wimbledon, having this week edged back into the top 200 which will see her gain direct entry to qualifying for Wimbledon.
It makes it even more unlikely that the All England Club organisers will grant her a wildcard and they are instead expected the follow the example of the French Open.
Source : EXPRESS