This year's last Grand Slam tournament, US Open, is approaching, but the tennis world is in anything but harmony.
Earlier in the week, the news broke that world number one Jannik Sinner had tested positive for the banned steroid clostebol on two occasions in March. The 23-year-old's excuse was that he had ingested it during a massage, and that it was a mistake by a person on his team.
An excuse that was accepted, and Sinner thus avoided suspension.
It sparked strong reactions from several other players on the tour, including the outspoken Nick Kyrgios and Denis Shapovalov.
Now, world number two Novak Djokovic has also spoken out, and is directing strong criticism at the rules governing doping in tennis.
"I understand that many players become frustrated, because there is no continuity," says the Serb according to The Telegraph, and continues:
"Many players, without naming names, have been in similar or even the same situation, but where the outcome has been different. There are no clear protocols. I understand that many players question whether everyone is treated equally."
Djokovic, who is in the midst of preparations for the first round of the US Open, which begins on Monday, also hopes that this case can lead to change higher up.
"Hopefully, the governing bodies in our sport will learn something from this case, and have a better strategy in the future."