The 2020 Tokyo Olympics is less than 1 year away - Here are 13 athletes to watch for breakout performances

Country: United States

Sport: Swimming

One thing to know: Michael Phelps had three records broken in July 2019. Caeleb Dressel broke two of them.

Dressel won a record eight medals at the 2019 World Aquatics Championships to break Phelps' previous record of seven medals in a single meet. He also broke Phelps' world record in the 100-meter butterfly.

While Dressel was a member of Team USA during the 2016 Rio Olympics and took home two gold medals, they were in team relays. In 2020, he'll be looking to secure his first individual Olympic medal.

Country: Great Britain

Sport: Diving

One thing to know: 19-year-old Lois Toulson is a 10-meter platform specialist. She made her Olympic debut in 2016 in the women's 10-meter synchronized event.

She will be making her individual 10-meter debut in Tokyo.

Country: United States

Sport: Swimming

One thing to know: Michael Andrew was 14 years old when he turned professional, making him the youngest swimmer in United States history to do so. Andrew competed in five events at the US Olympic Trials in 2016 but did not qualify.

He has gained a lot of buzz because of his non-traditional style, which involves Ultra Short Race Pace Training. The method has swimmers in a pool for a maximum of two hours per day, training at the pace they will swim in meets.

Country: Japan

Sport: Gymnastics

One thing to know: Takeru Kitazono is the future of Japanese gymnastics and the successor to gymnastics great Kohei Uchimura.

At the 2018 Youth Olympic Games, he won five gold medals to become the first artistic gymnast ever to achieve the feat in a single Youth Olympic Games. Those five medals came in the all-around, floor, rings, parallel bars, and horizontal bar events.

While Uchimura is expected to compete for a final time in Tokyo, Kitazono is one to watch if he qualifies for Japan's team.

Country: United States

Sport: Swimming

One thing to know: Regan Smith swam in the 2016 Olympic trials at just 14 years old, but did not qualify for those Games.

Her chances of qualifying for 2020 are much higher. During the 2019 World Aquatics Championships, Smith broke Missy Franklin's 200-meter backstroke world record and went on to win her first World Championship title. She currently holds the world records in 100-meter and 200-meter backstroke, as well as a part of the 4 x 100 Medley Relay.

Country: United States

Sport: Gymnastics

One thing to know: Simone Biles may be the biggest name in gymnastics, but Morgan Hurd is poised to join her on Team USA. The 18-year-old was named to the women's national team in 2016. She won the 2017 Artistic Gymnastics World Champion all-around title, a five-time World medalist, and took home a gold medal as a member of the 2018 World Champion team.

Country: United States

Sport: Track & Field

One thing to know: 22-year-old Noah Lyles clocked in at 19.65 at the 2019 Diamond League meet in Paris for a new meet record. The former record of 19.73 belonged to sprinting legend Usain Bolt.

Lyles has his eyes set on three gold medals at Tokyo: the 100-meter, 200-meter, and 4x100 meter realy titles.

Country: United States

Sport: Track & Field

One thing to know: Sydney McLaughlin was 16 years old when she qualified in 400-meter hurdles for the 2016 Rio Olympics, making her the youngest athlete to make the USA Olympic track and field team in 36 years.

Ever since her Olympic debut, where she finished fifth in her semifinals heat and failed to make the finals, McLaughlin has risen to the top of the sport. In June, she defeated former Olympic champion Dalilah Muhammad.

At the US Outdoor Track and Field Championships in July, she earned silver behind Muhammad, who obliterated the world record in the event.

Country: Russia

Sport: Swimming

One thing to know: 18-year-old Kliment Kolesnikov made his debut at the 2017 World Aquatics Championships, where he set two world junior records.

That same year, he became the first swimmer born in the 2000s to hold a world record in an individual event.

At the 2018 European Championships, Kolesnikov established a new 50-meter backstroke world record and took home six medals (four team and two individual).

Country: United States

Sport: Skateboarding

One thing to know: Street-skater Nyjah Huston needs no introduction to the skateboarding community, and soon the rest of the world will know about him too.

Huston was the overall champion at the Street League Skateboarding competition series in 2010, 2012, 2014, 2017, and 2019. He also has 12 Summer X Games gold medals.

One of the highest-paid skaters to date, Huston is one of the favorites to take home gold for Team USA in Tokyo.

Country: Slovenia

Sport: Sport climbing

One thing to know: As sport climbing makes its Olympic debut in 2020, so will Janja Garnbret.

Garnbret won the International Federation of Sports Climbing (IFSC) Climbing World Championships in bouldering and combined climbing in 2018 and 2019. She also became the first athlete to win all Bouldering World Cup events in a season in 2019.

When she arrives in Tokyo in summer 2020, the 20-year-old will be the heavy favorite for Olympic gold.

Country: Hungary

Sport: Swimming

One thing to know: Kristof Milak shattered Michael Phelps' 200-meter butterfly record during the 2019 World Aquatics Championships to win the gold medal.

The 19-year-old won three gold medals during the 2018 Summer Youth Olympics and will be a strong competitor in the pool if he qualifies for the Tokyo Games.