and there's a debut for a new form of basketball: a three a side event. japan's women opened the tournament against the russian team competed under a neutralflag but lost 21—18. but the threat posed by covid hasn't gone away. there have been 127 positive cases around the games so far, and one of them — for the czech beach volleyball player marketa slukova meant that their opening match on friday againstjapan was cancelled and a win was awarded to the hosts. these games have been a long time in the making. our correspondent rupert wingfield hayes was with a family as they watched the opening ceremony. for the uno family, it has been a long, anxious wait to get to this moment.