(CNN)The 2020 Summer Olympics are finally underway in Tokyo.
Competition began Wednesday, more than a year after the original start date. The Games were delayed due to the pandemic, but with Covid-19 still spreading unchecked in Japan, organizers have been forced to take unprecedented steps to keep competitors and the public safe. Olympic athletes, baseball players, soccer stars: Why we're still seeing Covid-19 cases among top athletesAthletes who contracted coronavirus have seen their Olympic dreams dashed.
Some tested positive in Japan, some before coming.
These are the athletes we know who have publicly dropped out due to Covid-19 health and safety protocols.Read MoreTeam USA: 5 Katie Lou Samuelson — USA Women’s 3×3 Basketball Coco Gauff — USA Women’s Tennis Kara Eaker — USA Women’s Gymnastics Taylor Crabb — USA Men’s Beach Volleyball Bradley Beal — USA Men’s Basketball (Placed in health and safety protocol but hasn’t publicly disclosed a positive Covid-19 test) Team Czech Republic: 6Pavel Sirucek – Czech Republic Men’s Table Tennis Ondrej Perusic — Czech Republic Men’s Beach Volleyball Michal Schlegel — Czech Republic CyclingMarkéta Sluková-Nausch — Czech Republic Women’s Beach VolleyballBarbora Hermannova — Czech Republic Women’s Beach Volleyball (Ruled out because her partner Sluková-Nausch tested positive for Covid.)Pavel Širuček — Czech Republic Table TennisTeam Great Britain: 3 Amber Hill — Great Britain Shooting Dan Evans — Great Britain Tennis Johanna Konta — Great Britain Tennis Team Mexico: 2Hector Velazquez — Mexico Baseball Sammy Solis — Mexico Baseball Team South Africa: 2Thabiso Monyane — South Africa Men’s Football Kamohelo Mahlatsi — South Africa Men’s Football Team Australia: 1Alex de Minaur — Australia Men’s Tennis Team Chile: 1Fernanda Aguirre — Chile Women’s Taekwondo Team Netherlands: 1Candy Jacobs — Netherlands Women’s Skateboarding
Team Russia: 1Ilya Borodin — Russia Swim Team