Day 2 of the Rio Olympics will be the coming out party for the U.S. women's gymnastics team and feature Michael Phelps' first event of the Games. Here's the big stuff you should keep an eye out for on Sunday, Aug. 7 (all times ET).

All events are live-streamed at NBCOlympics.com. Find out all the ways to watch the Olympics here.

Rio Olympics: Stars to watch

Gymnastics, women's qualifying
When: 4:30 p.m.
Three-time defending all-around world champion Simone Biles will make her Olympic debut as the U.S. women begin their campaign for a second straight team gold. The top eight teams qualify for the team final, while the top 24 gymnasts (two per country) advance to the all-around final, and the top eight individuals (two per country) on each apparatus move on to the respective event finals. The U.S. women begin on the floor.

U.S. women's Olympic gymnastics teamU.S. women's Olympic gymnastics team

Swimming, men's 4x100-meter freestyle relay final
When: 10:52 p.m.
France is the favorite to repeat here, but this will be the first time you'll get to see Phelps if he's named to the team for the final (he's been on this relay team every Olympics since 2004). The U.S. quartet will include 100-freestyle reigning champ Nathan Adrian and first-time Olympian Caeleb Dressel.

Diving, women's synchronized 3-meter springboard
When:
3:00 p.m.
The most decorated female diver in history, China's Wu Minxia, who swept the 3-meter titles in London, is aiming for a fourth straight gold medal here, this time with partner Shi Tingmao. She would be the first diver to win five Olympic gold medals.

Other medal events:
- Shooting, women's 10-meter air pistol (10:00 a.m.)
- Cycling, women's road race (11:15 a.m.)
- Shooting, women's trap (bronze medal match at 2:30 p.m.; gold medal match at 2:45 p.m.)
- Weightlifting, women's 53 kilogram (2:30 p.m.)
- Judo, women's 52 kilogram (bronze medal bouts at 3:26 p.m.; gold medal bout at 3:40 p.m.)
- Archery, women's team (bronze medal match at 3:39 p.m.; gold medal match at 4:07 p.m.)
- Judo, men's 66 kilogram (bronze medal bouts at 3:47 p.m.; gold medal bout at 4:07 p.m.)
- Fencing, men's individual foil (bronze medal bout at 4:15 p.m.); gold medal bout at 4:45 p.m.)
- Weightlifting, men's 56 kilogram (6:00 p.m.)
- Swimming, women's 100-meter butterfly (9:03 p.m.)
- Swimming, men's 100-meter breaststroke (9:53 p.m.)
- Swimming, women's 400-meter freestyle (10:01 p.m.)