
Murphy won gold in the 100 and 200 Rio finals but Rylov won both titles in Tokyo.
“I’ve got 15 thoughts, 13 of them would get me into a lot of trouble,” said Murphy when asked by a reporter if he had any concerns about his races in relation to doping.
“It is what it is. I try not to get caught up in that. It is a huge mental drain on me to go throughout the year, that I am swimming in a race that’s probably not clean and that is what it is. ”
When asked about Murphy’s comments Rylov said: “I don’t understand this suggestion. I was concentrating on the result.”
A Russian team spokesman declined to comment on Murphy’s remarks.
USA Swimming had no immediate comment.