Squad members held up signs saying 'To all athletes', 'Fight!', and 'Tokyo 2020' with an image of the Olympic rings
The Mainichi newspaper earlier reported that the government was planning to ban overseas spectators due to worries they would spread the coronavirus, citing multiple unnamed sources.
As Japan expands state of emergency, calls grow to cancel Games. Japan has repeatedly insisted it will hold the Games despite opinion polls showing a majority of respondents want them postponed again or cancelled.
Japan basked in the glow of its World Cup soccer team's historic win over Colombia, a victory that has lifted the nation's mood after an earthquake struck its second-biggest metropolis Osaka.
Japan sits at the juncture of four tectonic plates - or moving slabs of the earth's outer crust - and is one of the world's most quake-prone regions.
The attacker believed that 'all disabled people needed to be killed'.