Which swimmer stopped the USA men's team from a clean sweep of Olympic swimming gold medals in 1976?

I remember David Wilkie, we even have a plaque up in our swimming baths, which says he opened it!! brilliant guy

remember him cos of his moustache, the famous moustache.. sorry David if you read this?!

Hence the expression “ tumbling over my Wilkies “ ! 👀.... Its a Scottish thing 😂🤣😂