Each day of the Tokyo Games, NBC Olympics will provide a rundown of the biggest athletes and the biggest events to watch across a variety of sports. Every single event can be streamed live on NBCOlympics.com and the NBC Sports app, and many can also be seen on the television networks of NBC. For even more events, visit the Olympic schedule page to find listings for specific sports or TV networks.

Simone Biles attempts to lead Team USA to a third-straight gold medal in the team competition, the U.S. women's basketball team begins its Olympic tournament and the United States and Japan square off for a softball title 13 years in the making. Here's what to watch on a day that will put many of the women of Team USA front and center.

Primetime on NBC

Monday night in primetime, NBC will be showing live coverage of swimming finals alongside a presentation of the men's gymnastics team all-around final.

NBC Primetime: July 26

  • Start Time: 8 p.m. ET
  • TV Channel: NBC
  • Live Stream: Watch

Women's Triathlon

The very first competition to get underway on Day 4 is the women's triathlon, and the United States has a strong trio of athletes — Summer Rappaport, Taylor Knibb and Katie Zaferes — who are all capable of contending for spots on the podium.

Women's Triathlon

  • Start Time: 5:30 p.m. ET
  • TV Channel: USA
  • Live Stream: Watch

Surfing

Americans Caroline Marks, Carissa Moore and Kolohe Andino will head to the surfing quarterfinals tonight. Andino knocked fellow U.S. surfer John John Florence out of the bracket yesterday during a head-to-head matchup in Round 3.

They'll compete for a shot at the semifinals and then the medal matches, which were moved up to today due to the weather.

Men's & Women's Events

Quarterfinals, Semifinals, Finals

Beach Volleyball

Pool play continues in beach volleyball, and the Day 4 slate will be highlighted by a matchup atop women's Group B. The American "A-Team" of April Ross and Alix Klineman will face Liliana Fernandez and Elsa Baquerizo of Spain in their second of three preliminary matches. Both pairings won their first match of the tournament and currently hold the top two spots in the group.

April/Alix (USA) vs Liliana/Elsa (ESP)

  • Start Time: 8 p.m. ET
  • TV Channel: CNBC
  • Live Stream: Watch

Swimming

The U.S. has found much of its Olympic success so far in swimming, and even more medal opportunities await tonight. Regan Smith (women's 100m backstroke), Ryan Murphy (men's 100m backstroke) and Lilly King (women's 100m breaststroke) are among the Americans who could finish on top of the podium in this session of swimming finals (9:30 p.m. ET).

Finals

  • Start Time: 9:30 p.m. ET
  • TV Channel: NBC
  • Live Stream: Watch

Heats

  • Start Time: 6 a.m. ET
  • TV Channel: USA
  • Live Stream: Watch

Men's Rugby

The U.S. men, led by Carlin Isles and Perry Baker, will play rugby powerhouse South Africa in their third and final game of the preliminary round. Later on in the day (early morning in the U.S.), the knockout round will start with four quarterfinal matchups. The U.S. heads into the evening undefeated after beating Kenya and Ireland in its first two pool-play games. 

United States vs. South Africa

  • Start Time: 10:30 p.m. ET
  • TV Channel: CNBC
  • Live Stream: Watch

Quarterfinals (4 Games)

  • Start Time: 4:30 a.m. ET
  • TV Channel: NBCSN
  • Live Stream: Watch

Women's Basketball

Led by WNBA stars including Sue Bird, Diana Taurasi and Breanna Stewart, the U.S. women's basketball team will be heavily favored to win a seventh-straight gold medal in Tokyo. Team USA opens Olympic play with a preliminary-round game against Nigeria. These two teams met during exhibition play earlier this month, with the U.S. routing Nigeria 93-62 to snap a two-game losing streak.

United States vs. Nigeria

  • Start Time: 12:40 a.m. ET
  • TV Channel: USA
  • Live Stream: Watch

Women's Soccer

After getting stunned by Sweden in their Olympic opener, the USWNT righted the ship with a 6-1 win over New Zealand a few days later. In their final game of the group stage, the U.S. women play an Australia team led by star striker Sam Kerr. It'll be an important game for positioning, as the U.S. and Australia are currently level on points (three apiece) and chasing Group G leader Sweden (six points).

The top two teams from each group automatically advance to the knockout stage, so a win or a draw would guarantee the U.S. a place in the quarterfinals. (They hold the tiebreaker over Australia due to having the better goal differential.) The top two third-place teams will also move into the knockout round, so it's possible the U.S. can still advance even if they lose. 

United States vs. Australia

  • Start Time: 4 a.m. ET
  • TV Channel: USA
  • Live Stream: Watch

Women's Gymnastics

After a shaky qualifying round, the U.S. women's gymnastics team will look to sharpen their routines for the team all-around final. Although they finished second (behind ROC) during the qualification round, the United States remains the favorite for gold. Simone Biles, Suni Lee, Jordan Chiles and Grace McCallum will be attempting to win a third-straight gold medal for Team USA in this competition.  

Women's Team All-Around Final

Softball

The United States and Japan will play each other in softball for the second day in a row. This time, though, they'll be playing for the gold medal. Both teams entered yesterday's game having already clinched their spots in the final, so all that was on the line was who would be the top seed and earn the advantage of batting last in the gold medal game. The U.S. won that gold medal preview 2-1 thanks to a walk-off home run from Kelsey Stewart.

It's a matchup that U.S. pitchers Cat Osterman and Monica Abbott have waited 13 years for. Those two were on the roster at the 2008 Olympics when Japan upset the U.S. in the gold medal final — the last time that softball appeared on the Olympic program until this year.

Gold Medal Game

  • Start Time: 7 a.m. ET
  • TV Channel: NBCSN
  • Live Stream: Watch