In the "I didn't know this was an issue" category:
Hitting the Wall - At the 2008 Olympics in Beijing, Milorad Cavic lost the 100-meter butterfly to Michael Phelps by one one-hundredth of a second. Or maybe he won and there was a timing error. It depends on who you ask, what parts of the internet you read, and how deep down the rabbit hole you go—a place Cavic still finds himself 12 years after one of the closest and most controversial races in history.
https://www.theringer.com/2020/7/29/...fly-conspiracy