Each and every day of the 2024 Paris Olympics, NBCOlympics.com will keep you updated overnight with the biggest stories from across the Olympic landscape. All competition streams live on NBCOlympics.com and Peacock — visit the schedule page for more details. We will continue to update this recap throughout the day.

After an exciting first day of competition in which the U.S. won its first gold medal of the Games thanks to the men's swimming 4x100m freestyle relay team, the momentum continued for Team USA on Sunday.

Despite appearing to struggle with a lower leg injury, Simone Biles finished atop the leaderboard in the women's gymnastics qualification round in her Paris Olympic debut and the U.S. men's basketball team breezed past Serbia in their opening game of the tournament.

Here's what you should know from Day 2.

Simone Biles made her Paris Olympic debut on Sunday in the women's gymnastics qualification round. This round served as the qualifier for the team final, all-around final and individual event finals. The 23-time world champion is the favorite to win her second all-around Olympic title in Paris, a feat only two female gymnasts have ever achieved (Larisa Latynina and Vera Caslavska).

Biles began by delivering a stellar routine on beam. But while warming up on the floor exercise ahead of Rotation 2, Biles appeared to injure her lower leg. Despite some apparent discomfort, it did not stop her from competing.

The seven-time Olympic medalist finished the competition atop the leaderboard in the all-around with a score of 59.566, the highest score that any gymnast has earned in an international competition this Olympic cycle. She finished No. 1 on vault and floor, second on beam and eighth on uneven bars. 

Afterwards, Biles' coach Cecile Landi said that Biles felt something in her left calf, but "wouldn’t be able to do what she did today if it was too serious." At this moment, there is no concern about her ability to keep competing at the Olympics. 

Defending all-around champion Suni Lee delivered a stellar routine on the uneven bars to secure her spot in the all-around final.

Tokyo silver medalist Jade Carey will not have the chance to defend her floor title after making several uncharacteristic mistakes throughout her routine. 

Sixteen-year-old Hezly Rivera, who is the youngest member of the entire U.S. Olympic team in Paris, contributed scores of 13.900 on uneven bars and 12.633 on beam.

The U.S. women will compete in the team final on Tuesday, July 30 at 12:15 pm ET. 

Results: Team | All-Around | Vault | Uneven Bars | Balance Beam | Floor Exercise 

The U.S. men's basketball team began its run to a fifth straight gold medal with a game against Serbia, which is led by three-time NBA MVP and Denver Nuggets star Nikola Jokic. The Serbia team was expected to be the United States' toughest opponent in Group C.

Team USA was led by Kevin Durant, who missed camp and exhibition games due to a calf injury, but was cleared to play before the game. Durant looked like he never left, making all eight of his shots in the first half and finishing with 23 total points.

Despite a slow start, the U.S. team finished with a convincing 110-84 win over Serbia. The game featured five Americans in double figures and a 62% mark from the field.

Team USA will return to action on Wednesday, July 31 vs. South Sudan.

BOX SCORE

American Haley Batten won silver in the women's mountain biking final, claiming the United States' best-ever finish in mountain biking (men or women) and first medal overall since Georgia Gould's bronze in 2012. 

Batten remained in contention through three laps, but on the fourth lap, her bike tire flattened on the rock portion of the race. The time it took for her to repair the tire caused her to fall to eighth, but she closed the gap on the fifth lap to battle back for a second-place finish.

Results: Women's mountain bike final
🥇 Pauline Ferrand-Prevot (FRA)
🥈 Haley Batten (USA)
🥉 Jenny Rissveds (SWE)

FULL RESULTS

American swimmer Torri Huske won her first individual gold medal in the women's 100m butterfly on Sunday and she had to chase down her teammate and pre-race favorite, Gretchen Walsh, to do it. 

Huske won the final in 55.59 seconds, besting Walsh by 0.04. She is the first American since Dana Vollmer (2012) to win gold in the women's 100m butterfly.

The United States goes 1-2 in the women’s 100m butterfly for the third time in history. Huske and Walsh join Shelley Mann and Nancy Ramey in 1956 as well as Mary T. Meagher and Jenna Johnson in 1984 in taking the top two podium spots.

Results: Women's 100m butterfly
🥇 Torri Huske (USA)
🥈 Gretchen Walsh (USA)
🥉 Zhang Yufei (CHN)

The women's individual foil final saw Lee Kiefer and Lauren Scruggs become the first Americans to compete against one another in the gold medal match. Kiefer became only the third woman to successfully defend her Olympic gold medal in this event when she ultimately won 15-6.

With Kiefer's gold, she joins Mariel Zagunis (2004, 2008) as the only two American women to win multiple fencing gold medals. Both Zagunis' golds came in the women’s individual sabre. Kiefer is married to Gerek Meinhardt, who will compete for the U.S. in men's individual foil on Monday, July 29. Meinhardt took to social media to congratulate his better half on her epic win.

Results: Women’s individual foil
🥇 Lee Kiefer (USA)
🥈 Lauren Scruggs (USA)
🥉 Eleanor Harvey (CAN)

FULL RESULTS

Tennis phenom Coco Gauff defeated Australia's Ajla Tomljanovic in straight sets (6-3, 6-0) in the first round of the Paris Games on Sunday at the legendary Phillipe-Chatrier Court. The American and reigning U.S. Open Champion will next face Argentina's Lourdes Carle in her Round 2 singles match.

U.S. women's volleyball stars Kelly Cheng and Sara Hughes opened their Olympic campaign with a dominant win in straight sets over Czechia's Marie-Sara Stochlova and Barbora Hermannova with the Eiffel Tower looking on.

Cheng and Hughes went on a five-point run at the end of the first set to take the early lead, and the 2023 world champions carried that momentum into the second set. The dynamic duo will next face France's Aline Chamereau and Clemence Vieira on Wednesday, July 31.

• The U.S. men's water polo team lost to Italy in its Paris Olympics opener.
• Japan's No. 2-ranked table tennis mixed doubles team, Hina Hayata and Tomokazu Harimoto, was upset by North Korea's Ri Jong Sik and Kim Kum Yong, 4-1, in the first round at the Paris Olympics, losing the chance to retain the country's gold medal.
• The Slovenia women's handball team captured its first win in team history when it defeated South Korea.
• Rafael Nadal defeated Hungary's Marton Fucsovics in a three-set stunner. He will face Novak Djokovic next in a wild Round 2 matchup.
• Fourteen-year-old Coco Yoshizawa (JPN) won the skateboarding women's street competition, ahead of fellow teenagers Liz Akama (JPN) and Rayssa Leal (BRA).
• The U.S. women’s rugby team opened pool play with a 36-7 victory over Japan on Sunday. Ilona Maher and Alex Sedrick added tries in the second half for the easy win. They followed that performance up with a 24-5 win over Brazil in their second match.
• The USWNT captured its second victory of the Games with a dominant 4-1 win over Germany. Team USA concludes group stage play on Wednesday, July 31 against Australia.