Liu Tingting of China competes during the Women's Uneven Bars Final of the 2019 FIG Artistic Gymnastics World Championships in Stuttgart, Germany, Oct. 12, 2019. (Xinhua/Zhang Cheng)

Simone Biles of the United States prepares to compete during the Women's Uneven Bars Final of the 2019 FIG Artistic Gymnastics World Championships in Stuttgart, Germany, Oct. 12, 2019. (Xinhua/Zhang Cheng)

Gold medalist Nina Derwael(C)of Belgium, Silver medalist Rebecca Downie (L) of Great Bratain and Bronze medalist Sunisa Lee of the United States pose for photos during the awarding ceremony after the Women's Uneven Bars Final of the 2019 FIG Artistic Gymnastics World Championships in Stuttgart, Germany, Oct. 12, 2019. (Xinhua/Lu Yang)

Nina Derwael of Belgium competes during the Women's Uneven Bars Final of the 2019 FIG Artistic Gymnastics World Championships in Stuttgart, Germany, Oct. 12, 2019. (Xinhua/Zhang Cheng)

Nina Derwael of Belgium competes during the Women's Uneven Bars Final of the 2019 FIG Artistic Gymnastics World Championships in Stuttgart, Germany, Oct. 12, 2019. (Xinhua/Zhang Cheng)

Simone Biles of the United States competes during the Women's Uneven Bars Final of the 2019 FIG Artistic Gymnastics World Championships in Stuttgart, Germany, Oct. 12, 2019. (Xinhua/Zhang Cheng)

Liu Tingting (R) of China waits for scores after the Women's Uneven Bars Final of the 2019 FIG Artistic Gymnastics World Championships in Stuttgart, Germany, Oct. 12, 2019. (Xinhua/Zhang Cheng)

Sunisa Lee of the United States competes during the Women's Uneven Bars Final of the 2019 FIG Artistic Gymnastics World Championships in Stuttgart, Germany, Oct. 12, 2019. (Xinhua/Zhang Cheng)

Sunisa Lee of the United States competes during the Women's Uneven Bars Final of the 2019 FIG Artistic Gymnastics World Championships in Stuttgart, Germany, Oct. 12, 2019. (Xinhua/Zhang Cheng)

Rebecca Downie of Great Britain competes during the Women's Uneven Bars Final of the 2019 FIG Artistic Gymnastics World Championships in Stuttgart, Germany, Oct. 12, 2019. (Xinhua/Zhang Cheng)

Chinese gymnast Liu Tingting competes during the Women's Uneven Bars Final of the 2019 FIG Artistic Gymnastics World Championships in Stuttgart, Germany, Oct. 12, 2019. (Xinhua/Zhang Cheng)

Liu Tingting of China competes during the Women's Uneven Bars Final of the 2019 FIG Artistic Gymnastics World Championships in Stuttgart, Germany, Oct. 12, 2019. (Xinhua/Zhang Cheng)

Gold medalist Nina Derwael(C)of Belgium stands on the podium during the awarding ceremony after the Women's Uneven Bars Final of the 2019 FIG Artistic Gymnastics World Championships in Stuttgart, Germany, Oct. 12, 2019. (Xinhua/Lu Yang)