Denis Shapovalov has come out to pledge his support to the PTPA following the Vasek Pospisil row.
Pospisil was apparently overcome with his frustrations at the Miami Masters, telling a chair umpire that APT chairman Andrea Gaudenzi had 'screamed' at him for over an hour the previous day.
Alongside world number one Novak Djokovic, the Canadian is one of the founders of the PTPA, an independent players union which was formed from a belief that the ATP players council do not adequately represent players' interests in men's tennis.
Pospisil's on-court breakdown highlighted the fragility of relationships within tennis politics, and Shapovalov has now joined the growing list of players backing him.
“I’m definitely on the PTPA side," Shapovalov told reporters in Miami.
"I think we are not under-represented, but I think there [are] ways that we could be represented better.”
“They are just telling us to go and play tennis which, in my opinion, it’s not right. They shouldn’t, you know, talk to us like that if we’re partners.”
Milos Raonic, John Isner, and Ivo Karlovic among others have also come out publicly to support the PTPA.
Novak Djokovic also pledged his backing to Pospisil, describing him as "an individual of the highest integrity."
For more exclusive content from Tennisbuzz, including news, features, trivia, promotions and more, please be sure to sign up for our newsletter below or via our home page.
Why not test your tennis knowledge by tackling one of our fiendish quizzes too?