Are you talking about competition results, competitive careers, and the like? Are are you looking for things like the advent of the flip turn (tumble turn)? I think that was a big ‘moment’ in the history of swimming.
That's a question I hadn't considered. I was thinking moments as in competition results, but you raise a good point. Charlie Daniels "inventing" American crawl might be another because it gave us the freestyle stroke we know today.
