Greece have withdrawn from the Tokyo Olympics artistic swimming competition after four of their athletes tested positive for COVID-19, the Greek Olympic Committee (HOC) said on Tuesday. One athlete tested positive on Monday while another three returned positive tests on Tuesday, ruling the team out and forcing the athletes into quarantine. "The team from the very first day it entered the village has not come into contact with any other member of the Greek Olympic team for obvious reasons," the Hellenic Olympic Committee said. All athletes are under tight restrictions once they arrive in Japan as the country struggles with record numbers of infections and the Olympic Games are held without spectators. Tokyo confirmed 3,058 new COVID-19 cases on Sunday, a day after topping the 4,000 threshold for the first time amid a nationwide surge in infections and as the Olympics entered their second week in the capital.