Novak Djokovic has been praised by Marco Trungelliti for his efforts to help players with the Professional Tennis Players' Association (PTPA), while the 33-year-old criticized Roger Federer and Rafael Nadal's silence.

The Argentinian player recently spoke of how he was ostracized from the tennis community after he reported match-fixing that led three of his compatriots - Nicolas Kicker, Patricio Heras, and Federico Coria - to be banned from the sport in 2018.

Things got so bad for Trungelliti and his family in his home country that he was forced to relocate to Andorra, but he recently returned to Argentina for the Buenos Aires Challenger after almost five years. In a recent interview with La Nacion, he shared his thoughts on the state of match-fixing in the sport today, saying that although the Challenger Tour is better, it is still a big problem in ITF Futures.

"The Challenger level improved a little, but it is still far away, the numbers don't show. But Futures are unsustainable. At least one match per day is arranged," he said.

The 33-year-old called out two of the Big Three and accused them of staying silent regarding the corrupt system.

"It seems indispensable to me. People may like it or not, but Federer and Nadal never said anything. Whether they like it or not, they are complicit in how bad the system is, because they were not able to open their mouths even once and fight for the rights of the players. If they ever did it it was internally, but it didn't change anything," he said.

In particular, he highlighted the financial difficulties many lower-ranked tournaments and players face, and praised Djokovic and Canadian player Vasek Posipisil for standing up for players' financial rights by founding the PTPA.

"Only this year the Challengers prizes were changed a little, but they are still embarrassing, when we supposedly came out of the most golden era in the history of tennis. You cannot be complicit in the fact that 80-100 people live in tennis. It's what always screwed me up and will continue to screw me up.

"As players they [Federer and Nadal] can be very good, but as humans trying to improve the system in general, they seem very poor to me. This is what Djokovic and Vasek Pospisil are doing today as well," he continued.