ToplineUSA Gymnastics announced Friday that Simone Biles, an American gymnast, will not compete at the Tokyo Olympics in the vault or uneven bars. This was after Biles, the 2016 gold medalist, abruptly pulled out of two events earlier in the week because of mental health concerns.Simone Biles, from Team USA, looks on during the Women's Team Final at the Tokyo 2020... [+] Olympic Games on Tuesday. Getty ImagesThe Key FactsUSA Gymnastics announced that Biles pulled out of Sunday's finals for uneven bars and vault after consulting with doctors. MyKayla Skinner will compete alongside American Jade Carey in the vault event.What to WatchBiles was also eligible for the balance beam and floor exercises on Monday and Tuesday. It is not clear if shell will compete. USA Gymnastics stated that Biles will be assessed daily.Important QuoteUSA Gymnastics released a statement saying that they remain in awe Simone for her ability to manage this situation with grace and courage, as well as all the athletes who have shown their support in these difficult circumstances.Important BackgroundBiles is widely considered one of the greatest gymnasts ever. On Tuesday, she pulled out from the women's team finals at mid-competition. This shocked her fans and left her teammates to compete without Biles. They eventually won silver medals. Biles also pulled out from the individual all-around finals which showcases four skills. Biles explained later that she is struggling with the twisties. This is a well-known phenomenon where gymnasts lose control in midair and have trouble finishing complex maneuvers safely. Fans on social media were warned by Biles that she could be dangerous competing in her current state. Biles also mentioned the need to take care of her mental health. This revelation was well received by celebrities and other athletes.Continue readingSimone Biles explains her Olympic withdrawals on social media, which indicate that she may not compete again in Tokyo (Wall Street Journal).Simone Biles claimed she understood the twisties. Gymnasts instantly understood. (Washington Post).