Ryan Murphy lost the second of his Rio backstroke titles to Russian Evgeny Rylov on Friday and the US swimmer then suggested doping had played a part in his demise.
Kyle Chalmers erased the third-oldest individual world record last week, one of the many male freestyle marks that had remained since the super-suit era.
Tokyo 2020: Technology plays a crucial role at the Olympics thehindu.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from thehindu.com Daily Mail and Mail on Sunday newspapers.