Ron, Nellie, and 16-year-old Adria Biles cheer on Simone in the women's gymnastics team final.
Michael Phelps celebrates winning his 20th career gold medal by kissing his three-month old son Boomer and fiancée Nicole Johnson.
Team USA cyclist Kristin Armstrong won her third gold medal in the the individual road time trial — she's the first athlete ever to win gold three times in a row in the same cycling event. Her son thinks she's pretty cool, too.
Swimmer Katinka Hosszu, of Hungary, celebrates with her coach and husband Shane Tusup after a successful semifinal swim.
next slide will load in 15 secondsSkip AdSkip AdNorwegian rowers Kjetil Borch and Olaf Tufte pose with their children on their shoulders after winning bronze.
Elena Cecchini, of Italy, takes a moment to hug family members before beginning the women's cycling road race.
Nia Ali celebrates with her son Titus on the track after snagging the silver medal in the women's 100-meter hurdles.
British cyclist Laura Trott hugs her parents after winning gold in women's omnium.
Dutch gymnast Sanne Wevers high fives her coach and father, Vincent, after besting Simone Biles and Laurie Hernandez to win gold in the women's balance beam event.
next slide will load in 15 secondsSkip AdSkip AdSwimmer Joseph Schooling gets a warm welcome home, hugging his father after arriving at Singapore's Changi Airport.
Brazil's Larissa França is embraced by family after winning a quarterfinal match in women's beach volleyball.
British rower Olivia Carnegie-Brown greets her proud mother after winning silver in women's eight rowing.
Brazil's Iziane Castro gets a kiss from her mother after a women's basketball game against Turkey.
Cyclist Mark Cavendish, of Great Britain, greets his wife and son at the men's omnium final.
next slide will load in 15 secondsSkip AdSkip AdBahamian sprinter Shaunae Miller celebrates with her mother after winning gold in the women's 400-meter race.
New Zealand rower Mahe Drysdale poses with his gold medal and his daughter.
Elia Viviani, of Italy, celebrates his gold medal in men's omnium, sharing an emotional moment with his parents.
Brazilian rugby player Isadora Cerullo hugs fiancée Marjorie after accepting her marriage proposal.