that is how Zadick got into the tournament in BeijingI think the country earns the qualification, not the individual. Meaning they can send a replacement (we could have sent McKenna if JO got hurt before the Olympics). In 2013, JB broke his ankle before Worlds and there was talk about Dake replacing him.
I think if the guy that beat JO had missed weight today, then JO would have been in. And also maybe if he failed a drug test during the competition.