The American Kassidy Cook diving during practice Thursday before the three-meter springboard event Friday. The United States’ dominance of the sport has been threatened by China, which has led the medal standings. Wong Maye-E/Associated Press
Browse FINA Diving World Cup - Aquece Rio Test Event for the Rio 2016 Olympics latest photos. View images and find out more about FINA Diving World Cup - Aquece Rio Test Event for the Rio 2016 Olympics at Getty Images.
View United States' Kassidy Cook leaps with excitement as she cheers for her teammates competing in the men's synchronized springboard diving final, Aug. pictures and other Rio Olympics Best Photos From Day 5 photos at ABC News
View United States' Kassidy Cook dives during a training session at the Maria Lenk Aquatic Center at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Thursday, Aug. pictures and other Rio Olympics Best Photos From Day 6 photos at ABC News