Dan Evans believes Novak Djokovic set "a poor example" with the Adria Tour and hopes it does not lead to plans to hold the US Open being reconsidered.
Djokovic was the driving force behind the event that drew huge crowds in Serbia and Croatia before the Zadar final between the world number one and Andrey Rublev was cancelled after Grigor Dimitrov tested positive for COVID-19.
Borna Coric subsequently revealed he had also contracted coronavirus, while it is reported Dimitrov's coach Christian Groh and Djokovic's fitness trainer Marko Paniki have caught the virus too.
Evans criticised the "total disregard" of social distancing measures, with players pictured dancing together at nightclubs and making contact while playing basketball.
He said: "I just think it is a poor example to set. Even if the guidelines in that country are not two metres, I think we should all… it is not a joke, is it?
"Even if the guidelines were taken away in this country [the United Kingdom] to normal I would still be trying to keep myself out of the way as much as I could from other people. And I just think there has been a total disregard to that.
"It is very unfortunate that Grigor has it, Coric has it but, you know, if you strip it back, is it a surprise? I think that is the question we should all ask.
"I think we could definitely learn from that. And hopefully that event doesn't take away from… now the US Open, I hope there is no second-guessing now on the US Open because of unfortunate events."
Asked whether Djokovic should consider his position as president of the ATP Player Council, Evans said: "I don't know. Honestly, when I sit in those meetings, I don't know how it really works and how they get to those positions.
"But, put it this way, I don't think you should be having a players' party and dancing all over each other and then, two very good tennis players have tested positive, you should feel some responsibility in this event and how it has transpired."
The ATP Tour has been suspended since March but is slated to return with the Citi Open on August 14.
The Western and Southern Open will follow ahead of the start of the US Open on August 31.
Tournaments will be played with either reduced fans in attendance or behind closed doors.