I mentioned that there's a chance for a medal in the All-Around, but that does not mean that one of the Brazilians is absolutely going to take it. You see, the thing with gymnastics is that you have to keep an eye on what everyone has been training and which upgrades they are planning. All-Around is a very open event, and seriously six or seven countries can achieve medals, including the US, Russia, China, Brazil, Japan, France and Great Britain.
Rebeca Andrade currently has the second highest difficulty on vault, only behind Biles, and her execution has been fantastic in training. Biles has a new, more difficult vault, and she's hands down the favorite for the gold medal. But Carey, Rebeca and Ellie Downie will have a great battle for silver and bronze. Of course we have vaulters like Shallon Olsen, Giulia Steingruber, Corine Devillard, Oksana Chusovitina and Alexa Moreno still going strong, but at this point, they are one step behind Biles and the other three I mentioned, both in difficulty and execution.
Now, predicting medals in men's gymnastics is a lot harder because there are many serious contenders. For example, most people who are hopeful for a medal in the horizontal bar for their fellow countrymen are probably not aware of what Uchimura and Miyachi have been training. On paper, their routines should easily give them gold and silver on this apparatus, especially because they'll receive slightly boosted scores thanks to home advantage. The same goes for Nina Derwael on the uneven bars, but Sunisa Lee now has an even more difficult and clean routine, which should put a hard fight against Derwael. It all comes down to how they will perform on that particular day, of course, but results from 2019 and especially 2018 should not be taken seriously when predicting medals in 2021.