“But honestly, I think pushing it back by a year throws a bigger loop into it than everybody thinks.
“The best of the best will fight back and you’re going to see some fast swims. But world records? I don’t think so.
With all these pools being shut down, somebody would have to be damn near perfect for the rest of the preparation to have that chance.
“With all these pools being shut down, somebody would have to be damn near perfect for the rest of the preparation to have that chance.”
Phelps, a longtime champion of mental health issues, said the emotional challenges of competing will be daunting.
“The mental approach is going to be disrupted so much. Some people might not be able to get over that,” he said.
Phelps, who has in the past been critical of the United States Olympic Committee, said the organisation was doing more to help athletes suffering with mental health problems but there was room for improvement.
“There are more opportunities nowadays for athletes to get the help they need, but there is still a way to go,” he said. “It’s good that we’re finally started.
“Everyone is so adamant that our physical wellbeing is perfect but our mental and physical health should be treated equally.