Michael Phelps and Caeleb Dressel of United States celebrate their win the men's 4 x 100m freestyle relay on day 2 of the Rio 2016 Olympic Games on Sunday, August 7.
The United States' Katie Ledecky celebrates after winning the gold medal in the women's 400m freestyle final.
American gymnast Simone Biles leads the field in the women's individual all-around competition at the end of the second day of the Olympics.
Serbia's Novak Djokovic hangs his head after losing a point during his first round singles tennis match against Argentina's Juan Martin Del Potro. The Argentinian beat Djokovic 7-6, 7-6.
Sarah Sjostrom of Sweden celebrates winning gold and setting a new world record in the women's 100m butterfly.
Uzbekistan's Oksana Chusovitina performs on the balance beam during the artistic gymnastics women's qualification round. At 41, she is the oldest gymnast to ever compete in the Olympics.
Daniele Garozzo of Italy celebrates after defeating Alexander Massialas of the United States, winning the gold medal at the men's individual foil fencing event.
China's Wu Minxia and Shi Tingmao won the women's synchronized 3m springboard final. Wu became the first diver to win five Olympic golds.
Catherine Skinner, right, celebrates her gold medal victory with fellow Australian Laetisha Scanlan, left, during the women's trap final at the Olympic Shooting Center.
Soares Renan of Brazil competes in the heats of the men's canoe single event at the Whitewater Stadium.
Hsu Shu-Ching of Chinese Taipei won the women's 53 kg Group A weightlifting contest with a total of 212 kg.
China's Tian Alex Hua, riding Don Geniro, competes in the Eventing Individual dressage event. He was 12th ahead of Monday's cross country and Tuesday's jumping.
Brooke Sweat of the United States dives for the ball during the women's beach volleyball preliminary round.
Koki Niwa of Japan is focused on the ball during his men's singles table tennis match match against Segun Toriola of Nigeria.
Nepal's Gaurika Singh, 13, competes in -- and wins -- her women's 100m backstroke heat.
A tear runs down the face of Russia's national all-round champion Angelina Melnikova as she leaves the arena after failing to qualify for the final of the artistic gymnastics women's competition.
Li Hongxia falls after diving to shoot at goal as China loses 4-1 in its women's field hockey match against Germany.
Dustin Brown of Germany grimaces after hurting his ankle during his match against Thomaz Bellucci of Brazil. Brown would later exit the game.
Competitors warm up prior to a rowing event at the Lagoa Stadium.
A volunteer wearing a temporary tattoo of the Olympic rings waits for the start of competition after the rowing event was delayed. Later the official governing body for world rowing confirmed that all races were canceled Sunday due to high winds and choppy waters at Lagoa.
Pietro Roman of Italy riding Barraduff reacts after competing in the Eventing Team Dressage event.
Belarus' Alexandra Privalova has a nose for the ball in her women's singles qualification-round table tennis match.
Jiaxin Tan of China competes on the uneven bars during the women's qualification for Artistic Gymnastics.
Russia's Evgenia Ukolova dives for the ball during a women's beach volleyball qualifying match against Brazil.
Dutch fans watch the women's field hockey match between New Zealand and South Korea. The Netherlands was to face off against Ireland in the men's division later in the day.
Volunteers cut holes in wraps around the spectator stands due to strong winds. The wind has caused delays and cancellations for some events.
Chi-Chung Tan of Chinese Taipei competes during the men's 53kg Group A weightlifting contest.