A source familiar with Japanese professional baseball says a pitcher has become the country's first player of the sport to test positive for the new coronavirus.
Shintaro Fujinami of the Hanshin Tigers underwent the test at the advice of a doctor on Thursday.
Five Japanese people have tested positive for the new coronavirus after returning from Italy, Spain, and France.
The five were tested at quarantine stations at Haneda Airport in Tokyo or Narita Airport, near the capital, on Friday.
Officials in western Japan's Mie Prefecture say a man who was a passenger on a cruise ship that was hit by the coronavirus has again tested positive after recovering from infection.
The man, who is in his 70s, first tested positive for the virus on February 14 while he was onboard the Diamond Princess, which was under quarantine off Yokohama.
Officials of Osaka Prefecture, western Japan, say a woman in her 40s, who had been treated for symptoms of the new coronavirus and left hospital early this month, has again tested positive.
The woman is a tour guide living in the city of Osaka.
A woman in her 60s in Tochigi Prefecture, north of Tokyo, has tested positive for the new coronavirus after disembarking from the quarantined cruise ship docked near Tokyo.
Last Saturday, the woman on the Diamond Princess tested negative for the virus.
Japan's health ministry says 88 more people on board the quarantined cruise ship Diamond Princess have tested positive for the new coronavirus. Sixty five of them have not developed any symptoms.
The number of infections on the ship anchored at Yokohama Port, near Tokyo, has now risen to 542.
Authorities in Wakayama Prefecture, in western Japan, say a male doctor in his 50s living there has been confirmed to be infected with the new coronavirus.
Aside from 218 cases from the cruise ship, 31 people have tested positive in Japan, including 12 people who were evacuated on chartered flights arranged by the government.
A taxi driver in Tokyo has tested positive for the new coronavirus. Japan's health ministry is investigating how he was infected.
Japan's health ministry says three evacuees from the Chinese city of Wuhan have tested positive for the new type of coronavirus.
The three individuals were among the more than 200 passengers who returned to Japan on Wednesday on a government-chartered flight.