Olympic chiefs acknowledged Wednesday there was no "ideal" solution to staging the Tokyo Olympics in response to a growing number of athletes expressing concern as the coronavirus pandemic swept the globe.
Football's European Championship and the Copa America have been postponed for a year, but the International Olympic Committee says it is "fully committed" to holding the Games from 24 July as scheduled.
"This is an exceptional situation which requires exceptional solutions," an IOC spokesperson said after criticism from top athletes that they would be forced to take health risks should the Games go ahead.
"The IOC is committed to finding a solution with the least negative impact for the athletes, while protecting the integrity of the competition and the athletes' health," the spokesperson continued.
"No solution will be ideal in this situation, and this is why we are counting on the responsibility and solidarity of the athletes."
Olympic pole vault champion Katerina Stefanidi and Britain's world champion heptathlete Katarina Johnson-Thompson both voiced concerns at the IOC's stance.
Stefanidi, one of Greece's most prominent athletes, was scheduled to hand the ceremonial flame to Japanese officials before the Greek leg of the torch relay was scrapped over Covid-19, which has more than 200,000 cases and 8,092 deaths across 150 countries and territories as of 1300 GMT Wednesday.
"The IOC wants us to keep risking our health, our family's health and public health to train every day?" Stefanidi tweeted.
"You are putting us in danger right now, today, not in 4 months."
On Tuesday, minutes before the IOC statement that it was pressing ahead with its preparations, Euro 2020 was delayed for a year, bowing to the crisis that has paralysed Europe and drastically curtailed international travel.
Olympic qualifying tournaments are among the swathe of sports events that have been cancelled or postponed. Only 57 percent of athletes have booked their places so far.
"It's unbelievable," said Stefanidi."What about team sports that have to train together? What about swimming? What about gymnastics, that they touch the same objects?
"There is zero consideration of the risk they are putting us in right now."
French swimming federation president Gilles Sezionale expressed his disappointment at the IOC "evoking the possible continuation of the Games".
"I am devastated by so many inconsistencies when we should today devote ourselves solely to the epidemic to save lives!"
Johnson-Thompson, who won her multi-event world title in Doha in October, criticised the IOC for telling athletes to train "as best they can", saying it was at odds with stringent government health measures.
"I feel under pressure to train and keep the same routine which is impossible," she wrote on Twitter.
"It's difficult (to) approach the season when everything has changed in the lead-up apart from the ultimate deadline," added the Briton.
Doubts are increasingly being expressed about holding the Olympics in its current slot, after the outbreak that first exploded in China spread to Asia and then worldwide.
On Wednesday an Olympic gymnastics qualifier in Tokyo, doubling as a test event, became the latest competition to be cancelled.
A day earlier, the deputy head of Japan's Olympic committee said he had tested positive for coronavirus.
But the IOC insisted "there is no need for any drastic decisions at this stage", adding that "any speculation at this moment would be counter-productive".
Hayley Wickenheiser, a Canadian IOC member with four ice hockey gold medals, warned "this crisis is bigger than even the Olympics".
"From an athlete perspective, I can only imagine and try to empathise with the anxiety and heartbreak athletes are feeling right now," she said in a statement.
"The uncertainty of not knowing where you're going to train tomorrow as facilities close and qualification events are cancelled all over the world would be terrible if you've been training your whole life for this."
Wickenheiser added: "I think the IOC insisting this will move ahead, with such conviction, is insensitive and irresponsible given the state of humanity."
France's 110m hurdler Pascal Martinot-Lagarde, a European champion and world bronze medallist who finished fourth at the 2016 Rio Olympics, told AFP a postponement was the only fair solution.
"We're not all in the same boat, there are countries which are less affected than others. In some countries athletes can train normally while we can't even access our training track," he said.
"We are not on an equal footing when it comes to preparation. The Games should be postponed until the end of 2020, not next year."
Germany's six-time Olympic dressage gold medallist Isabell Werth meanwhile said not talking about a potential postponement was "an incomprehensible and unjustifiable delaying tactic by the IOC and the Japanese".
This is not about how things will be in 4 months. This is about how things are now. The IOC wants us to keep risking our health, our family’s health and public health to train every day? You are putting us in danger right now, today, not in 4 months.https://t.co/cICKVQ4qsZ— Katerina Stefanidi (@KatStefanidi) March 17, 2020