The Games should be definitely postponed to 2021. Even if Japan will be free from virus until July there is no reason to risk health and life of athletes and spectators for two weeks event, because surely in many countries virus won't be defeated until summer and athletes/fans can transfer the virus to Japan once again and infected thousands of people. For now athletes even can't qualify to these Games because everything everywhere is postponed/cancelled, many of them stays in home and can't prepare as they planned it, changing qualification system 4 months before Games is unfair even considering current situation. Let's everyone recover from this virus to next year, there is no need to be hurry, life is more important than a sport.